He/She certainly has some guts to make this size bets. Although he's making about $1000 a spin, unless they're literally a millionnaire and having a bit of fun, then it's not sustainable at all. I mean, at the most, he's risking about $70,000 to win about $2,200. Unless his bank is around 900 BTC, to sustain 2 or 3 losses, he'll never be able to recoup the loss in my opinion.

If I was him, I'd take the BTC and run!