I think that first sentence is correct. I left the rest in because I knew it felt good to type, and I don't want to distract from the main thrust of your stuff.
Looking at Eric Mangini (and, by the way, the "Mangenius" stuff didn't just become stoopid this season) on the sidelines during the game, watching him react to team adversity, he struck me a immature. I thought the same thing when I heard his very first press conference - a cliche festival - but, after a handful of games, I figured I had made an unfair assessment. Now, I'm not so sure. He looked immature, and there's no positive way to spin that, because if that's MY impression, then the team must sense it also. Some of the post-game comments, openly questioning play calling, prove the point.
I'm willing to watch the team perform poorly, as long as I see heart in their play. But I'm thinking that this coach is suddenly wondering who he can call for help, and finding his speed-dial relatively empty. He needs to grow up. On his own. Pretty quickly.