I don't know.
SOmething snapped.
A pity. I was a fan of him before he even joined the UFC.
I recall him beating Saku, he was very nice and humble and I truly thought he could be something special/dangerous.
Then his fight with Bisping was a WTF moment... it's like he had no cardio, nothing!
His last fight against C.B. Dollaway, I thought he was forced into it, and lost because he was not healthy. I know it is said he hurt in the fight, but I think he was injured already..
Anyway, IMO he snapped sometime during TUF.