What do you think Garrett will do now?
If he stands by his assertion that she definitely cheated, he's basically saying the investigation HCL did is bunk and then I can't see them inviting him back on HCL. I'm sure he has plenty other private games to play in, but playing in those private games does not get you noticed and invited to play in games like High Stake Poker.
Or does he accept the results, swallow his pride and apologize, blame his actions on stress not related to the game, and give her the money back?
I think he should have given the money back long time ago. And now more so.