Ok, flipping a coin. Heads roll back. Tales press on. Heads it is, doh. Ok will do roll back tomorrow. I think the key thing is to delete our 2h files so we don't submit them out of sequence.
I somehow managed to roll back two turns. I force hosted through turn 64. We should be on turn 65. I really need to go to bed, otherwise I would check to make sure the turn is right tonight.