Also, to take this one step further (and yes I just quoted myself

)
You're a new head coach of a team and you run a 3-4 defense. You walk into the training room and sitting there is your 360 lb, stud, pro bowl Nose Tackle that you have never met up until this point. The guy that is almost single-handidly responsible for making your 3-4 defense work and by far your best defensive player.
You don't say "hi" to the guy? Even if you're not interested in exchanging pleasantries with the guy, you know how important he is to you. You're not at all interested in talking football with him for a few minutes? See how he is feeling? See how he feels about the upcoming season? What he liked or disliked about his first year in a 3-4 defense last year? Find out what he feels he did well, what he feels he needed to improve on so it can help you start getting to know him and game planning for him? Etc.
Even if you want to say that it is not a "****-move" on Mangini's part, fine. We disagree, but fine. But nobody can argue that it is not an absolutely stupid, incompetent, and irresponsible coaching move. This is why Eric does not have A CLUE! Just like with the Jets, he doesn't care about his players, doesn't care about their strengths and weaknesses, and he'll just install his proven-to-be-####ty style of crap defense and force feed his players into it whether it plays to their strengths or not.
Sorry Browns fans but this is what you got. The guy is truly a clown.