none of the bets verify
If the server seed was changed at a particular nonce, the bets after that nonce should all verify using the latest server seed. If this set includes the losing streak, and unibtc was playing pretty unpredictably it's unlikely any foul play was involved.
After his last big session when he withdrew 11 BTC, that's when we changed the server seed. He didn't bet once with this seed though.
Right and that IS how Unibtc plays. He changes from hi to lo randomly, also changes the size of the bets randomly too. So I hope that proves it was an honest and stupid mistake, that won't happen again. Regardless, Unibtc is continuing to play on our website after all of this so that definitely proves to us that he is the real deal and we were just being way too paranoid.