Dobson baited because he wanted to see if he got any reaction. His Twitter is almost always a ghost town when he's bitching, whining, ranting... the usual, or even when he's saying his steel-plated heart has been shattered. He likes the fact he got a reaction out of the most people he's ever seen in one post (5 or 6?) so now he knows he can use it to gain more ass pats.
I'm not too surprised he'd do this, he's been meaning to find any way to gain sympathy or an ass patting reaction for a while. Doesn't make it any less disgusting, though.