Why?
1. If they just escape, there will be serious legal consequences. And the whole media world (CNBC, CNN, etc.) is watching at them.
2. They cannot refund USD. The purchasing price of stolen bitcoins are different: someone purchase at $1000, some at $0.25. If they refund by purchasing prices, many will be unhappy. Also, the market price is changing seconds by seconds. If they refund by the market price, many may be unhappy either because bulls may argue my coin has appreciation potential and I don't want the worthless fiat at all. Finally, if they refund by moving average price, people will argue why use 30 days MA instead of 50 days MA, etc. So refunding USD is near impossible for bitstamp.
For that reasons, I believe bitstamp will quietly buy back the bitcoin from the open market.
