Best for everyone.
Except for Sanchez. Since he's done there he should fricking go off on Rex for putting him in the game.
What was he going to do? Hold a clip board all year and face questions from the media after every game about how he feels being a back up. While injuries suck, it's in a lot of ways a better alternative for him.
Now he can go home, rehab, get his on training crew, get cut by the Jets, and try to get a fresh start elsewhere.