He and His Apostles ate grain off the stalks on the Sabbath. That was a sin to the Jews, too. The Pharisees called them on it.
No, that was called a sin according to the Pharisaical tradition. Not Torah. That Yeshua paid no mind to the tradition of the Pharisees (in fact, he attacked it incessantly) is no surprise - But He cannot have broken Torah, nor, if they were true, could His disciples have broken Torah, lest each and every one who did were false prophets.
No the law against consuming blood goes back to the OT law given BY GOD
Gen 9..God gave men permission to eat meat BUT they were told " you must not eat meat that has its lifeblood still in it
The legalisms of the Sabbath were not given by God..they were man made rules (like not eating meat on Friday..or "holy days of obligation").. not laws from God.. ceremonial laws of men
Jesus was making that point when he broke the grain off.. and when he healed the blind man with his spit ( considered sin by the pharisees), He was teaching the difference between legalist tradition and Gods law ...
God had made the law against drinking blood.. He would not break HIS law..that would be a sin..and he would then fail at being a sinless Savior
And we all know that the Jews had added man made requirements to the laws of God don't we. Pretty much like the Catholic Church does actually.