Not sure if you noticed but your argument went from completely changing what God said about  His Sabbath commandment  to now saying it ended at the cross.
Hopefully this will help…
It seems to be a common theme for those who think the Sabbath commandment ended to use 
Colossians 2:16-17. I would like to take a look at this scriptures and see if what Paul is talking about is one of God’s commandments.
The first step is understanding if commandments are ordinances.
Nehemiah 9:13
“You came down also on Mount Sinai, And spoke with them from heaven, And gave them just 
ordinances and true laws, Good statutes 
and commandments.
Scripture shows ordinances are not commandments and commandments are not ordinances- they are separated.
Most when quoting 
Colossians 2:16-17 never back up to 
Colossians 2:14 for some reason which plainly gives the context.
Colossians 2:14
Blotting out the 
handwriting of 
ordinances that was against us, 
which was contrary to us, and took it out of the way, nailing it to his cross;
So we know this from 
Colossians 2:14:
1. They are handwritten
2. They are ordinances
3. They are contrary.
Does this fit the Sabbath commandment in any way? Absolutely not.
1. The Sabbath was 
finger-written by God 
Exodus 31:18
2. The Sabbath is a 
commandment of God. Exodus 20, 
Exodus 34:28
3. God said the Sabbath is 
holy and blessed Exodus 20:8-11
Colossians 2:14 certainly does not fit with the Sabbath commandment so not sure why so many people try to force this to fit despite the facts clearly showing it is not referring to the weekly Sabbath commandment.
Are there other sabbath(s) in scripture called ordinances that would lead us to the correct context of this passage? What does the scripture say?
2 Chronicles 33:8
Neither will I any more remove the foot of Israel from out of the land which I have appointed for your fathers; so that they will take heed to do all that I have commanded them, according to the whole law and the statutes and the 
ordinances by the 
hand of Moses.
Moses hand-wrote the ordinances and the hand of Moses is not the same as the finger of God.
Ezekiel 43:18
And He said to me, “Son of man, thus says the Lord God: ‘These 
are the 
ordinances for the altar on the day when it is made, for sacrificing burnt offerings on it, and for sprinkling blood on it.
So what is 
Colossians 2:14-17 talking about? The sacrificial system in the annual sabbath(s) feast-day ordinances that was used for the forgiveness of sins. These all point to Jesus because He became our sacrificial Lamb for the forgiveness of sin and sanctification when we turn from sin and through Jesus He can give us a new heart and enables us to keep His commandments through love and faith. 
John 14:15-18, 
Romans 3:31. The blood of animals made nothing perfect Hebrews 10, but the blood of Christ can cleanse from all sins, when we turn from sin and walk with Christ in obedience to Him. The annual sacrificial sabbath(s) all came after the fall of man. The seventh day Sabbath was part of Creation 
Genesis 2:1-3 and was part of God’s perfect plan before the fall of man.
There is no scripture that says we can break the commandments of God. The Sabbath is part of a unit of Ten 
Exodus 34:28 that God placed together and cannot be separated, changed, deleted or removed. Sin is the transgression of God’s law 
1 John 3:4 and Paul quotes right to the 10 to point out sin. 
Romans 7:7
It’s sad so much energy goes in trying to disprove one of God’s finger-written Ten Commandments instead of just obeying God.