Howling:Rory's death

I think this also has something to do with the entire erasing things idea. This just turns into one big plothole: if Rory is absorbed and therefore completely erased from reality, and Amy forgets him, this brings up big problems. I honestly though Steve Moffat was better than this. Discuss. the twelfth doctor 11:56, May 30, 2010 (UTC)
 * How can Amy still remember the soldiers that were abosrbed by the crack?
 * How did the Doctor survive actually STICKING HIS HAND IN IT when everything else is completely erased?
 * How did the Doctor discover the source of Prisoner 0's power without Rory's help in TEH?