Your stalker here again to say that if you do roll the game back to turn 15, then the llamaserver will automatically use the turn 15 .2h files you sent in when the turn re-hosts. This isn't always obvious, as the status screen will say "Waiting for 2h file" wehn you rollback, but it does still have the .2h files that were sent, so no need to send any in. (and it's actually considered cheating by many if a turn file is sent in during a roll-back)
Only the sub-Lanka player should send in a turn file during the rollback, and then once he/she does send it, the admin should force host the game. After which, things should be back to normal (with the sub-Lanka player in place).
Of course, you need to find a sub for this to even be an option
Your stalker out