meh.. theres not much you can do, because steam doenst let you sell accounts for USD, so you can contact them and say you sold it for a fake currency and got scammed? I donno.. or you can hire a a hacker, get em to hack the staff dues comp, fry his hardrive, adn get your acc back
haha well maby the admin of the site can tell his staff member to give it back? Because its not right to do like this.
talk to the admin. IF they wont do anything, report the account to steam, if they screwed you, screw them.