Every Jets fan, except for a few delusional weirdos like Jordy and Ray Ray, think that Sanchez sucks. It's common knowledge.
For my money, something will definitely be done about Sanchez during the offseason. There's way too much public pressure on the Jets right now for the team to simply ignore it's most glaring weakness.
Even if Sanchez can manage to stick with the team due to his contract situation, he surely will not be starting. They'll bring in a veteran QB that will anihilate Sanchez in an open QB competition in training camp.