I find it hard to believe you wrote that. Rex Ryan took the Jets to two back-to-back AFC Championship game with a very young QB. I don't think all the problems in NY falls on Rex's shoulder (He take a good chunk of blame). But he was put in a lousy position to succeed especially the last two years where he was effectively a lame duck coach.
I agree the D disappeared against SD and NE. Against the Raiders, the D held them pretty good; You can't blame it on the coach when the Secondary allows a 50 yard completion on a 3rd and 22. Against Denver, the offense just stunk. The defense kept Manning TD-less, though they did give up 3 short-yard TDs to Anderson. But that is simply how CJ plays and due to the OL in Denver.
Does Rex hiring mean that the Bills will deny permission to the Giants for interviewing Peppers