Just curious, how did you come up with 'definitely will hit 15's tomorrow'? After looking at the numbers, I came up with a price of 17.50-17.75 as the bottom. Needless to say, your '15's' call was waaaay off.
The stock's in the red at the moment, but it's still above where it was trading at yesterday prior to the closing spike.
With all of this volume, there are a LOT of shares that are trading hands. As a result, the pool of shortable shares will be in flux for the next few days. That will almost certainly lead to quite a bit of forced buy-ins for shorts this afternoon.
The irony is that with all of the AH and premarket shorting, there are now a ton of shorts who are underwater on their positions.