They didn't have a blocking TE worth a damn all year. Michel averaged 4.4YPC yesterday, which included a couple of plays at the goal line where he was met by a wall behind the line of scrimmage.
You want Michel to be effective? Start throwing him the damned ball, get a TE who can block, and maybe a FB, too.
Every time he goes in the game, the other team stacks the box - the Pats never challenged that all year. He had 2 catches yesterday, but really? RBBC only works if putting in a particular back doesn't signal your 90+% run/pass indication.
It was bad coaching all year in this area. It's not surprising that ex-Pats coaches and players have figured out their tendencies....