Dragon:
And to start things off...
What are all your thoughts on the newest episode? The Doctor hinting at Rory by accident, Vincent mention Amy crying, and so forth?
Or what about the fact that in the episode when Rory was lost, the Doctor was able to reach into the Crack and not cease to exist himself. Is that because he's a time lord himself, or that somehow since he was involved in the Crack's creation it could not therefore destroy him, or it would destroy itself and then would never have existed at all?
Well, maybe she does remember Rory on some level. It was very nice byplay, for sure, and the whole Amy crying and her "I'm not the marrying type" line are perhaps indicative of Rory not being completely erased from her memory. Especially the crying bit.
As to the second question, I never even thought of that. How could he reach into the light without it destroying him, because he tells Amy with surety that anything the light touches cannot escape it. Your theory that he is himself involved in the Crack's creation presents an interesting potential paradox. Maybe it's something that will be explored in the next few episodes leading up to the finale.