Perhaps, but I think that rather what is happening there is that our Lord is dispelling the notion that his physical flesh would be cut off from his bones and eaten in the same manner that we eat animal flesh. He tells us that he is going to give us his flesh in another way (which he does, of course, in the Eucharist).
That is why in verse 62, before he says "It is the Spirit who gives life; the flesh profits nothing. The words that I speak to you are spirit, and they are life", he asks the question "Then what if you were to see the Son of Man ascending to where he was before?"
St. Augustine goes into that a bit here:
CHURCH FATHERS: Tractates on the Gospel of John (Augustine)
1. We have just heard out of the
Gospel the words of the Lord which follow the former discourse. From these a discourse is due to your ears and minds, and it is not unseasonable today; for it is concerning the body of the Lord which He said that He gave to be eaten for
eternal life. And He explained the mode of this bestowal and gift of His, in what manner He gave His flesh to eat, saying, He that eats my flesh, and drinks my blood, dwells in me, and I in him. The
proof that a man has eaten and drank is this, if he abides and is abode in, if he dwells and is dwelt in, if he adheres so as not to be deserted. This, then, He has taught us, and admonished us in mystical words that we may be in His body, in His members under Himself as head, eating His flesh, not abandoning our unity with Him. But most of those who were present, by not understanding Him, were offended; for in hearing these things, they thought only of flesh, that which themselves were. But the apostle says, and says what is
true, To be carnally-minded is death.
Romans 7:6 The Lord gives us His flesh to eat, and yet to understand it according to the flesh is death; while yet He says of His flesh, that therein is
eternal life. Therefore we ought not to understand the flesh carnally. As in these words that follow:
2. Many therefore, not of His enemies, but of His
disciples, when they had heard this, said, This is a hard saying; who can hear it? If His
disciples accounted this saying hard, what must His enemies have thought? And yet so it behooved that to be said which should not be understood by all. The secret of God ought to make men eagerly attentive, not hostile. But these men quickly departed from Him, while the Lord said such things: they did not
believe Him to be saying something great, and covering some
grace by these words; they understood just according to their wishes, and in the manner of
men, that
Jesus was able, or was determined upon this, namely, to distribute the flesh with which the Word was clothed, piecemeal, as it were, to those that
believe in Him. This, say they, is a hard saying; who can hear it?
3. But Jesus,
knowing in Himself that His
disciples murmured at it,— for they so said these things with themselves that they might not be heard by Him: but He who
knew them in themselves, hearing within Himself — answered and said, This offends you; because I said, I give you my flesh to eat, and my blood to drink, this forsooth offends you. Then what if you shall see the
Son of man ascending where He was before? What is this? Did He hereby solve the question that perplexed them? Did He hereby uncover the source of their offense? He did clearly, if only they understood. For they supposed that He was going to deal out His body to them; but He said that He was to ascend into heaven, of course, whole: When you shall see the
Son of man ascending where He was before; certainly then, at least, you will see that not in the manner you suppose does He dispense His body; certainly then, at least, you will understand that His
grace is not consumed by tooth-biting.
4. And He said, It is the Spirit that quickens; the flesh profits nothing. Before we expound this, as the Lord grants us, that other must not be negligently passed over, where He says, Then what if you shall see the
Son of man ascending where He was before? For Christ is the
Son of man, of the
Virgin Mary. Therefore
Son of man He began to be here on earth, where He took flesh from the earth. For which
cause it was said
prophetically, Truth is sprung from the earth. Then what does He mean when He says, When you shall see the
Son of man ascending where He was before? For there had been no question if He had spoken thus: If you shall see the
Son of God ascending where He was before. But since He said, The
Son of man ascending where He was before, surely the
Son of man was not in heaven before the time when He began to have a being on earth? Here, indeed, He said, where He was before, just as if He were not there at this time when He spoke these words. But in another place He says, No man has ascended into heaven but He that came down from heaven, the
Son of man who is in heaven.
John 3:13 He said not was, but, says He, the
Son of man who is in heaven. He was speaking on earth, and He declared Himself to be in heaven. And yet He did not speak thus: No man has ascended into heaven but He that came down from heaven, the
Son of God, who is in heaven. Whither tends it, but to make us understand that which even in the former discourse I commended to your minds, my beloved, that
Christ, both
God and
man, is one person, not two
persons, lest our
faith be not a trinity, but a quaternity? Christ, therefore, is one; the Word,
soul and flesh, one Christ; the
Son of God and
Son of man, one Christ;
Son of God always,
Son of man in time, yet one Christ in regard to unity of person. In heaven He was when He spoke on earth. He was
Son of man in heaven in that manner in which He was
Son of God on earth;
Son of God on earth in the flesh which He took,
Son of man in heaven in the unity of person.
5. What is it, then, that He adds? It is the Spirit that quickens; the flesh profits nothing. Let us say to Him (for He permits us, not contradicting Him, but desiring to
know), O Lord, good Master, in what way does the flesh profit nothing, while You have said, Except a man eat my flesh, and drink my blood, he shall not have life in him? Or does life profit nothing? And why are we what we are, but that we may have
eternal life, which Thou dost promise by Your flesh? Then what means the flesh profits nothing? It profits nothing, but only in the manner in which they understood it. They indeed understood the flesh, just as when cut to pieces in a carcass, or sold in the shambles; not as when it is quickened by the Spirit. Wherefore it is said that the flesh profits nothing, in the same manner as it is said that
knowledge puffs up. Then, ought we at once to
hate knowledge? Far from it! And what means Knowledge puffs up? Knowledge alone, without charity. Therefore he added, but charity edifies.
1 Corinthians 8:1 Therefore add to
knowledge charity, and
knowledge will be profitable, not by itself, but through charity. So also here, the flesh profits nothing, only when alone. Let the Spirit be added to the flesh, as charity is added to
knowledge, and it profits very much. For if the flesh profited nothing, the Word would not be made flesh to dwell among us. If through the flesh Christ has greatly profited us, does the flesh profit nothing? But it is by the flesh that the Spirit has done somewhat for our
salvation. Flesh was a vessel; consider what it held, not what it was. The
apostles were sent forth; did their flesh profit us nothing? If the
apostles' flesh profited us, could it be that the Lord's flesh should have profited us nothing? For how should the sound of the Word come to us except by the voice of the flesh? Whence should writing come to us? All these are operations of the flesh, but only when the spirit moves it, as if it were its organ. Therefore it is the Spirit that quickens; the flesh profits nothing, as they understood the flesh, but not so do I give my flesh to be eaten.
6. Hence the words, says He, which I have spoken to you are Spirit and life. For we have said, brethren, that this is what the Lord had taught us by the eating of His flesh and drinking of His blood, that we should abide in Him and He in us. But we abide in Him when we are His members, and He abides in us when we are His temple. But that we may be His members, unity joins us together. And what but
love can effect that unity should join us together? And the
love of
God, whence is it? Ask the apostle: The
love of
God, says he, is shed abroad in our hearts by the
Holy Spirit which is given to us.
Romans 5:5 Therefore it is the Spirit that quickens, for it is the Spirit that makes living members. Nor does the Spirit make any members to be living except such as it finds in the body, which also the Spirit itself quickens. For the Spirit which is in you, O man, by which it consists that you are a
man, does it quicken a member which it finds separated from your flesh? I call your
soul your spirit. Your
soul quickens only the members which are in your flesh; if you take one away, it is no longer quickened by your
soul, because it is not joined to the unity of your body. These things are said to make us
love unity and
fear separation. For there is nothing that a
Christian ought to dread so much as to be separated from Christ's body. For if he is separated from Christ's body, he is not a member of Christ; if he is not a member of
Christ, he is not quickened by the Spirit of
Christ. But if any man, says the apostle, have not the Spirit of
Christ, he is none of His.
Romans 8:9 It is the
Spirit, then, that quickens; the flesh profits nothing. The words that I have spoken to you are spirit and life. What means are spirit and life? They are to be understood spiritually. Have you understood spiritually? They are spirit and life. Have you understood carnally? So also are they spirit and life, but are not so to you.