I still like Lavar.
He's an emotional guy, and emotional guys sometimes say stupid things. I don't think HE is stupid. I really think he wants to be a part of something great. The injury came at a very bad time for him, as he finally presumably had coaches that were going to be around for awhile, and was looking forward to a scheme that would give him the ability to 'freelance' some, but would also force him to play disciplined ball.
I think most of what you're seeing is frustration at not contributing. If he continues to stir the pot, he'll lose the fans, and I think he knows that.
I'm not giving up on Arrington until I see him in William's system for a year. I think Williams can make him a star again if Lavar applies himself and can get and stay healthy.