You can short anything as long as your account allows it. Pros have no limits and as long as they can find someone to lend them the shares to short and cover their margin requirements, sky's the limit.

As far as the dead cat bounce goes, if you play the 50% bounce from the fall from 64 to 35, that's a 50 cent exit, trade is done. 10 cent upside from today and everyone is doing it.

<sarc>Wow, genius move</sarc>