Couldn't help but feel that the Doctor was talking to himself near the end. I made a photoset of the way I heard it.
It was designed for Tumblr, so it might look a little off here.
Definitely felt like he was working out some of his own frustrations, particularly over the recent loss of Amy and Rory. He shouted out everything he loathes in himself and then outright begged this thing to take his memories away. I quite enjoyed it.