I would have at the end of his comments, literally said. “Wow. I never would have expected cheating on a poker cruise.” and stood up.

I am sure it would not have ended there, but I would have held my ground on my statement. He would have a lot to loose at that point and no possible gain.

It may have escalated at that point… but I still would have said, “You can justify it anyway you want, but I think a majority of players would consider it collusion. -and you should know that.”