There is absolutely no dought in my mind, that someone from the staff at Stones passed on information about the other players hole cards to Mike, presumably via his cell-phone. There is way to much pointing in that direction for it all to just be written off as a coincidence:
* He is often looking down at something in his lap
* He has known connections to the casino (staff)
* In some of the hands the graphic suddenly changed
* His winrate is off the charts
* Some of his plays just simply dont make sense
As for the latter point, sure a single hand prove nothing in itself. Sometimes people just make a bad play. But when you combine calling off a 3-way all in with 54 offsuit with folding KK in another similar spot, then its really difficult to imagine the same player doing both of that, unless he know his opponents cards. A poker player can be a nit or a gambler, but he can not be a nit AND a gambler at the same time.
And its not just those two hands. In some hands Mike make incredibly nitty laydowns like folding top pair to a single bet, and he just check-call the river in a very small pot, when he has the nut flush, and his opponent has a straight flush on a paired board. But then in another hand he call KK twice in a 4-way pot on AJ9A, and as by magic noone has an A. The aggressor is
bluffing, and the two people overcalling behind Mike have JX and QT, so his KK is actually good. Its as, if he knew their cards! Which in fact he almost certainly did.