Cool! Keep the users calm while Dwolla loads the lifeboats with their money. In trade, Dwolla can kick back enough to keep you solvent. Mutually promise not to sue one another. Keep it silent and noone will be the wiser. Everyone wins. Modern business 101.
Just kidding...I of course don't know that Mt. Gox is doing that and I highly doubt it. I'm sure our VC brain trust here would highly approve of the strategy though.