Short sellers are a necessary group of market participants for revealing fraud and putting downward pressure on stock prices. However, this particular short seller was clearly making foolish decisions and I see no reason that he shouldn't lose it all.
Yep, totally agreed. I have no sympathy for this one, but part of me is concerned about whether or not it has a cooling effect on short selling in general and if it does, lots of people will feel some pain in the burst of the ensuing bubble.