I don’t have any idea whether the things in that article are true, though the allegations are obviously troubling.
That said, I think the writers did their story a disservice by taking irrelevant shots at Hillsman’s fashion sense, etc. The resume discrepancies also struck me as quibbling. That stuff is just not relevant to the real story — Hillman’s treatment of the players— and is just trying to throw additional mud on him. It makes their story seem more like a hit piece, which is too bad if their reporting is otherwise sound.