The story goes that Bill Parcells has some success with a team, then he leaves and he does things to make sure they're worse off than when he was there. That's the facts, jack.
So Miami is no exception. He now says he's "disappointed" in Henne. Pat White is playing baseball. Pretty much every big-name free agent brought in before this year is now elsewhere. Jason Allen is starting ahead of Smith. Koa Misi has been demoted.
Why does he do it? So his legacy remains - he is the reason teams got good, and without him they're not so good.