Eek, this is why there needs to be some kind of regulation by LSAC or whoever else does oversight.
This would worry me. Maybe (this is just a maybe and I'm just throwing it out there) you should put another deposit down elsewhere that gave you good aid. Then you can let the school you're worried about know that you've deposited at both places, but would prefer them-- that it just depends on getting good aid. Worst case, you lose $200. Best case, the school you deposit at lets you get a refund.