Wow, you've been productive. I'd say keep looking after Snell. He'll probably eventually lead you someplace where you can find more answers. Maybe he's got another computer lying around somewhere. Or possibly put a tap on his phones.. not quite legal, but it sounds like he's in another country anyway.
As far as the movies, it sounds like we should find a way to send you our versions. They're much more peaceful, and no shooting! At least, I don't remember any in Bill & Ted, and Marty didn't do any in Back to the Future.. just the terrorist guys. (Psst, Herb, before you go back to visit Clark here, stop by our universe to grab the movies.)