Theoritically, couldn't you just play the game up to the point where you get self-destruct, save, then rent 3 games and continue from the save point and teach the moves 3 times but not resave? Sorry, never played XD, so if i'm totally off on this, i apologize.
this guys right. just copy the file onto multiple memory cards just before you use self destruct (realise this uses lots of space ¬_¬ ) and do all 3
edit: wow, seems that they actually thought ahead for a change :P