And you told them Luther valued freedom more than truth?!
Clearly.
He left the Church and started forming his own doctrines.
Some examples:
My word is the word of Christ; my mouth is the mouth of Christ" (O'Hare PF. The Facts About Luther, 1916--1987 reprint ed., pp. 203-204).
You tell me what a great fuss the Papists are making because the word alone in not in the text of Paul
say right out to him: 'Dr. Martin Luther will have it so,'
I will have it so, and I order it to be so, and my will is reason enough. I know very well that the word 'alone' is not in the Latin or the Greek text (Stoddard J. Rebuilding a Lost Faith. 1922, pp. 101-102; see also Luther M. Amic. Discussion, 1, 127).
Be a sinner, and sin boldly, but believe more boldly still. Sin shall not drag us away from Him, even should we commit fornication or murder thousands and thousands of times a day (Luther, M. Letter of August 1, 1521 as quoted in Stoddard, p.93).
The Bible, in Luke 10:28, states,
"And he said unto him, Thou hast answered right: this do, and thou shalt live" (KJV).
Yet Martin Luther taught,
To do means to believe-to keep the law by faith. The passage in Matthew: Do this and thou shalt live, signifies Believe this and thou shalt live. The words Do this, have ironical sense, as if our Lord should say: Thou wilt do it tomorrow, but not today; only make an attempt to keep the Commandments, and the trial will teach thee the ignominy of thy failure (O'Hare, p.205).
Regarding the New Testament Book of Hebrews Martin Luther stated,
It need not surprise one to find here bits of wood, hay, and straw (O'Hare, p. 203).
He also wrote,
St. James' epistle is really an epistle of straw
for it has nothing of the nature of the gospel about it" (Luther, M. Preface to the New Testament, 1546).
and
In the first place it is flatly against St. Paul and all the rest of Scripture in ascribing justification to works
Besides, he throws things together so chaotically that it seems to me he must have been some good, pious man, who took a few sayings from the disciples of the apostles and thus tossed them off on paper. Or it may perhaps have been written by someone on the basis of his preaching (Luther, M. Preface to the Epistles of St. James and St. Jude, 1546).
Interestingly the Epistle of James is the only place in the Bible to actually use the term 'faith alone':
You see then that a man is justified by works, and not by faith alone (James 2:24).