That said, I'm not sure why you people are getting riled up over the Clara thing. It's just a continuation of an event that already happened.
It's not, you know.
She's not going into his timeline to prevent someone changing it. She's being shown to be the reason why that particular Gallifreyan ended up becoming the Doctor. This is Moffat making it so the series would never have existed without his creation, so to speak, and is about as arrogant as it gets.
And can easily be retconned away with some half assed hand waving like "You may have heard (fill in the blank).....you heard wrong." I'm not that worried about it.