FINALLY, a degree of common sense.
This isn't a big corporation's site. It was run by a few guys in their spare time. True, they could have backed up more, and putting the backup server online was incredibly stupid...
but the person who is to blame is the bastard who took both sites out. If you forget to lock your door, and someone uses that opportunity to burgle your house, you were partly responsible, but the police still go after the guy with your money, your valuables, your data, etc.
Either way, I do hope there is some way of rescuing that data—from what I gleam, the partitions had simply disappeared, and if mke2fs (or equivalent) hadn't been run, the data would still, in theory, be intact. It sucks. And the cretin who did this was a complete and utter twatflap.