Haven't had a chance to read through that PDF right now, but it makes me wonder why these people giving sworn testimony are crawling out of the woodwork now to spill their guts, not when he was supposedly cheating and taking titles from worthy runners-up...
It seems more like a case of "he said/she said" rather than actual proof (though conspiracy of that scale is hard to believe, granted).
I know of some people who had mentioned it before, while he was going for his biggest titles, and nothing was ever done about it.