...then transfer the fiat back to their accounts in time for their re-opening?
...
It's not that simple, even BTC-e requires verification for fiat transfers (Bitstamp also), so...
- Do you suggest Mark is using his real name for alleged illegal trading, or is he risking using ("verified") fake names, which could lead to losing all the cash, and other problems?
Doesn't have to be a fake name, he can just work with someone else who trades in his own name.