it seems like once Sanchez gets inside of the red zone he becomes timid, he overthinks plays and that's when the turnovers happen. It's almost like he knows he's going to F**k up. That int wasn't one play, it was a play that changed the momentum of the game and the fumble after was the first real nail in the coffin, the fumble return on the following kickoff cemented the game. Same thing in the Seattle game when he threw the pick in the red zone. PLays like that shift the game and when you play a team like the Pats, it's only a matter of time until they started scoring. Giving them a 14 to 21 point cushion is something that many teams can't recover from.
Sanchez' confidence is in the toilet and that's the real problem. The lack of playmakers doesn't make it any easier but the last year and a half has destroyed what Sanchez had. A change of scenary would be good for both parties in my opinion.