This is also what bothers me about OP. Did you lose the bug bounty on FJ as well?
Gambling addiction is real. If this guy was gambling on FJ for 8 to 13 hours... of course he has a problem.. by giving him free spins thats nice and all.. but how long does that last (long enough where it ends up being.. ok one more spin, nvm I meant one more after that.. or trips to the atm to withdraw $50.. gone.. ok this $100 is the last of it, fuck it with $200 more I can break even) and how quickly was the 0.2BTC dumped back into the site. A nice gesture but with sinister motives behind it. These guys at the online gambling sites know what they're doing and how to kickstart the gambling addiction that so many have.
Not much to do with the case but it's why you gave the guy free spins on top of everything else. Business model/marketing 101 in that line of work but don't pretend like it was you doing him a favor. Deep down we know free spins are just a fishing hook reeling in a gambler that can't stop.