Player buys in over the limit and wants his money back

[lgas]

This happened last weekend at the Borgata. I have a feeling I know what everyone's response will be, but I'm curious to see if there will be any disagreement.

Backstory: I felt this guy on a thin call... he goes into uber tilt mode. Thinks I'm the biggest donkey in the world, etc. etc. Tilts off money, goes and borrows more, tilts off more, gets stacked again by someone else, borrows more, etc.

After a while we are playing 3-handed. He gets felted by the other guy at the table. He goes and borrows money from his friend and comes back with 2 orange chips ($1k each). He puts one on the table in front himself and asks me for change for the other one. So I give him change which he pulls back over in front of him next to his remaining orange chip. This is the Borgata $5/$10 where the max buy-in is $1500. No one (including me, the dealer, the other player, or my friend who is sweating me) notice that he has now bought in $500 over the limit. Ostensibly, he doesn't notice either.

The very first hand afer his rebuy, I have 55 to his A6 on a 656 board and I felt him again. He ships the chips and goes off to borrow more money while myself and the other guy play heads up. In the meantime the dealer change occurs. The tilty guy comes back and counts out cash on the table to buy in. He has $1800 in bills. While making change for him, the dealer informs him that the max is $1500 and so he'll have to pull $300 off the table. He says "oh hey that's right... $1500 max... but I bought in $2000 on a minute ago... that dealer should not have let me do that... they should give me my money back." The dealer laughs and says "you can talk to the floor if you want but they'll just tell you it's too late now and that you needed to speak up before the pot was awarded". The guy insists on talking to the floor. The floor says exactly what the dealer said they would. The guy tries his hardest to get some sort of concession from the floor but ultimately lets the issue drop.

The problem is, then he starts in on me. "Hey you should give me my $500 back blah blah it isn't fair blah blah if I won I'd give it back to you blah blah it's the right thing to do blah blah your integrity blah blah."

I'll post how I handled it later, but in the meantime what would everyone else do in this situation?