I have no problem using either retcon or reboot (and if there's a concern over whether the two words are understood, then they can be wikilinked accordingly). Obviously the use of the words shouldn't be in the context of any speculation about the film on behalf of the article writers, but if there is sourced comment on the issues by people like Orci and Abrams, then it's a disservice not to include it. We're not writing a professional encyclopedia. Brittanica has people paid tons of money to do that. We're an Internet encyclopedia.