Yeah, it does go a long way to explain some of the plot holes. But to be honest, it didnt effect me, cos i had my own way of explaining certain events that were not explained in the movie.
But for the general audinece, i doubt they really cared, aslong as they got the jist of it, that was enough i suppose, without it being clogged up with temporal babble etc.
Beyerstein wrote:

If the timeline can heal it's self, will Vulcan go back together?
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And the headaches start.
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"Course your not,your not scared of anything. Box falls out the sky, man falls out of box, man eats fish custard. Look at you, just sittin' there,you know what i think? Must be helluva scary crack in your wall" - The Doctor