Mayo's handler said it was Tim Floyd who personally handed him the wad of cash and he was shocked Floyd himself showed up to do it. Very shortly thereafter, Floyd was gone. I'd say that's pretty damning evidence that, as far as I know, TF has never tried to dispute. If he did, I never heard.
I was told he was going to dispute it, when he went to the AD/University they told him they were not going to support him. They were already under investigation for the football program.
The handler's story is pretty suspicious. Why would he tattle on Floyd, why would Floyd do it himself, and why would it only be $1000?