I get the same blank page upon attempted login also.
I had 9 BTC in my account a few days before the attack, and since I operate 367 GH I would have had 12-14 by the time the attack occurred, perhaps more.
I'm back on Ozcoin for the moment, and I'll be checking my payouts daily - I can't afford for something like this to happen again. It's partially my own fault for leaving so much to build up on my account. So set up an automatic payout for each day, or make sure to cash out. Don't be like me and risk up to 3000 USD (at time of writing).