If any of this had any actual Scriptural basis, you might have a case. But since your only support for your statement is church tradition, it doesn't have much validity.
You still haven't addressed how or why Jesus would command His disciples to sin according to the Law of Moses, yet still be able to be sinless and able to be our Savior. Remember, Jesus Himself said He did not come to abolish the Law, but to fulfill the Law. How could He fulfill the Law if He is breaking the Law???
Do you eat the Passover lamb? Do you eat pork? Do you sacrifice animals to God?
Why not? You just said that Jesus himself could not change the Mosaic Law.