I'm surprised no one in that league has brought this question up previously. Who knows, maybe he is that amazing of a GM, but his supporters have got to at least wonder.
I thought something wasn't quite right with him ever since I saw the way he handled himself in this thread:
Online Leagues - "Rebuilding", Tanking, Win Later, Lose Now
Of course no matter how outlandish forum comments might be, they don't make you a cheater. But he certainly didn't sound like a commish I would want to play under.
Has he commished any other leagues?