Wow... I woulda been PISSED if I were you. I haven't dabbled in the MTT rush, nor will I most likely. I hope to hear what response they give you for such a big glitch. Tis the danger in playing things that don't have a long track record.
I haven't played Rush lately but this will happen to me @ std MTT or SNG tables when I've disconnected w/o realizing it...the only way I know I've disconnected is when I try to open the lobby for another tourney then the screen saying 'site found' will pop up & (attempt) to reconnect (note: I can still access the lobby for the game that I'm in & the hand history; if I attempt to leave the table it gives me the msg asking if I'm sure I want to leave & hands will be folded?).
Just happened to me in the Daily Dollar. I had to close and reopen FT-came back up. Saw the 8 card board though. Seems like it's the 2 of clubs on the turn or river that sets it off.