Re: 7X05 The Angels Take Manhattan (Grading/Discussion) (SPOILERS!)
Surely them disappearing from their own timeline would be a bigger blunder to their personal timeline.
"It's not that you can see the strings, it's that 40 years later you're still looking at them." - Steven Moffat
"This movie was big. Imagine how big it could have been with me in it?" William Shatner