I love that under any other circumstance they would've halted trading. They've done it countless time during mini BTC crashes.
I suppose holding their customer's coins hostage and letting the price go down to nothing is their best exit. At this point, they know their days are numbered even in a best case scenario.
So they bide time, let the price crash, buy cheap coins, potentially arb them to make money for themselves and possibly pay back the customers that haven't sold out of panic, and they also attract new money from clients with enormous appetites for risk, enabling them to buy even more coins. So, they enrich themselves and possibly manipulate their way out of liability (possibly returning coins after they've flipped everyone else's coins several times over), then close shop?
This is essentially exactly what they described doing in their crisis strategy --
http://www.scribd.com/doc/209050732/MtGox-Situation-Crisis-Strategy-Draft'1- Immediately reduce liabilities as much as possible with partners
With actual assets using arbitrage/ injecting new coins to erase them from the books. Informing and asking selected Bitcoin main players to ask for their help. The MtGox price is low, making it possible to erase a significant portion of the debt, but it needs to be done quickly. Injections in coin are most useful (enough to run the exchange) but some cash is also needed to not run a fractional reserve'
