Thought it might be my browser, so I tried logging in with Firefox, hit "Sell at Bid Price" - Which, about 30 seconds after my first attempt with chrome was now $175.
Something is going to crash spectacularly when you get a $40 swing on something like this in 30 seconds.
I still can't sell my BitCoins though. The Irony is I had 20 of them left over from playing around a couple years ago on a linode VPS - they are actually worth quite a bit, if I could only sell them. I wonder how many other people out there are checking to see if they still have a .bitcoin directory sitting around on their various linux systems...