That was not a dump!!! It was a trading error with Mintpal. Never has a dump gone down 40,000 sat in less than 5 minutes and then back up again in 1 minute.
It was a dump, nothing to do with the site going down.
I tend to agree with iconicexpert. Looking at the order book between 60 and 85 it doesn't seem like it was wiped out just a few minutes ago.