Let's see whether those short ratios are still so high after today.
If they are still that high, those guys must be very convinced of their position as they are not taking good profits..
Conspiracy theory: Maybe they are trying to engineer a crash, perhaps thru releasing some bad news later.
P/S Was it just two days ago that the Royal Bank of Scotland, was calling for the end of the world, without providing any substantiating evidence? Wanna bet whether they were long or short the market?

It's all about "how much you made when you were right" & "how little you lost when you were wrong"