Exiting, where?
There is not the corresponding selling pressure on bitstamp.
This. It's true that tens of k's are leaving Gox, but they are not showing up on Bitstamp at all. And this have been going on for months now. Just check the order books.
Very slowly. There is still more BTC in the order books on MtGox than there were in April. But, yes. It looks like some are hoarding BTC. Prepare for rally!