I should have mentioned that I definitely thought of this scenario before I deleted anything and confirmed, via the hostname of the server, directory names, and

I should have mentioned that I definitely thought of this scenario before I deleted anything and confirmed, via the hostname of the server, directory names, and file names, that everything on that server was for h4x0ring (at least for that user account). I also thought of more subtle and clever ways to exact revenge, but decided I was too busy to pursue any of them. Also: Do you think these guys put their IP address and FTP password out there for anyone to collect as evidence? Yes, I do. You're giving the script kiddies far too much credit.