If anybody did anything, it was Chuck. He probably let it go to see if maybe he could knock Tito the **** out and have it end that way instead of a TKO... If you listen to his post fight interview he says:
"It was a good fight for the fans, wasn't too quick."
Either way, no big deal. Fights won't be fixed. The only fight that ever looked like it would be fixed is freaking what's his name against Drew McFederies where all of a sudden he laid down on his back. That fight wouldn't make any sense to fix. I don't remember in any of the fights you guys mentioned being fixed somebody making it blatantly obvious, there's too many variables in a fight. The only way to fix one would be to drop dead on a whiffed punch, or tapping way too early or something like that, and everyone would see it. Or Judges, and that one's been debated.