He couldn't of really just left.
It would of caused problems, with the daleks, having a large blue box which none of them own dissappear in front of them. They'd try to scan it and stop it leaving before they could. Confusing them allowed him to get away easier.
I dunno, it rounded off nicely for me bar that whole memory thing. It was only those last 2 minutes which could have been rewritten. The Doctor didn't need to return, but speculate. That would have been much better.
To be honest, the episode seemed cut off suddenly. and the whole wiping the doctor's events from dalek history as a pointless end off.
The Daleks were gonna attack the Doctor and Amy and Rory when they returned. And could of easily made an extra episode or a little extra time on the current episode.
Another thing, Though i saw it. I honestly don't ever see the doctor just leaving a whole army of daleks in space to fly around and do as they will.
I think those Daleks were all of those in creation, as last time we officially saw them, there were only 5 in the series (Victory of the Daleks), and the Daleks don't often send others away (I say that, I'm basing it on the new series, where this happened except for specific reasons like the Void Ship in Doomsday and Parting of the Ways)
I never said you said they killed em off.
It's just general who ha that's floating round my local area.
But yeah, I see you're point. I'm curious if she only did the daleks nearby, in the asylum and on the ship. Or, all of them in creation ?
She wasn't that specific.
''What did you do?
I made them forget you.''