Obviously this is old, and obviously we have more information, but how did we not pick up on Preydeth's fate sooner? We knew he went into the Vault, we knew he got Gorgon'd, and in addition, we probably should have picked up on the paradox surrounding the Gorgons. If they were to [i]completely[/i] erase something from time, it would have never existed to erase from time, meaning they would have to keep anything they "erase" in some kind of memory only known to them.