I thought they were taking the piss a little bit, particularly when they kept referring to quantum mechanics as the most "current and awesome" theory.
Perhaps I'm wrong, but I get the impression they added all this just to appease the crazy fans who like their continuity to tie up perfectly, then made this interview to kinda laugh at the notion of having to tie it all up perfectly.
Best example of this (note this could be considered to contain a very minor spoiler);