I wouldn't be surprised. AS probably wants more money if he's gonna fighting Sonnen again. He was promised that he fight would be in his home turf and now it gets moved. Can't blame the guy for it. Let's see how this plays out.
I bet if Overeem gets the ok from the atheletic's commission, that's of course if he can prove why he pissed such a high ratio then he would fight cain instead. If he fails, I'd feel bad for cain since he wouldn't have anyone to fight with.