I watched the whole thing live.
I was seeing the spike in mtgoxlive, tried to get better positions in my mtgox account.
then mtgox went down, and I was like blind. I wasnt sure the last data I had seen in goxlive was accurate, and mtgox itself didnt show it correctly.
then, when mtgoxlive came back, I saw the spike to 6.20, which gradually was removed from goxlive(for a short time the high dropped down to 5.74, the spike was purged from the price history.
While I acknowledge mtgox taking security measures to prevent loss, this situation is kind of hard for users. I mean, you sit ducks there, being blind during a major market event. But I wont blame gox this time.
Ive seen it handfuls of times before as well. I blame MtGox 100%