At first, I thought it read like "I'll bet you $1500, that I don't have a gambling problem." ....lol
But how does one get caught making bets, especially if it's only $1500? If it was something like $50k, I could see how. But $1500? With his kind of money, that's like regular people betting $20 over a game of Madden or golf or something. Just a pretty insignificant amount. If that tweet is true, that is.