Not gonna happen. If their USD accounts get frozen, nobody wants to hold USD. Expect buy-ins and transfer to other exchanges instead.
People keep saying this. I don't know about that. Bank runs happen for a reason. Most people have not picked up on the possible ramifications of this yet. But many understand what happens to the price of bitcoin it something serious happens to Gox.
Man, I had just recently been going over my fears about this... but I thought it was a ways away.
The price on other exchanges will drop as people transfer their bitcoins that they've just bought on Mt. Gox over to the other exchanges and then sell them there for dollars.