Apoc, I would definitely agree that a civil war seems like a real possibility if the circumstances come together just right. Let's say hypothetically that the election comes down to Florida again and we see the same kind of election fiasco that we saw in 2000... a President chosen without a majority of the popular vote... I could really see a mass revolt.
I was absolutely fascinated by the the Titor legend when I first discovered it, and one of the things that made me believe initially was the apparent feasability of the things he predicted, like the civil war. A totally believable scenario.
However, the items which led me to the conclusion that Titor is a hoax were primarily:
1. The Roddenberry-esque vision of the future. No pervasive mass media, technology used only for necessities and not convenience, mankind recognizing our faults and turning our backs on them, etc... It's too perfectionist and Utopian.
2. The convenience of the time travel theory itself and the concept of "divergence", which makes it very easy to explain away innacuracies or predictions when they don't come to pass.
Titor acted like he wanted everybody to believe him and yet everything he did stopped just short of offering concrete proof. His predictions were anything but conclusive and his pictures were intriguing but insufficient. A fantastic story, an intriguing idea, and a well executed hoax.
To me, the most ironic thing of all is that there are now so many true believers that even if Titor came forward in 2008 and admitted he hoaxed the whole thing, the believers wouldn't believe him. They would stick steadfastly to their belief that there really was a John Titor from the year 2036, and they would label the real hoaxer as a liar for claiming he hoaxed the whole thing.
Personally, if I was the guy who did this, I would come forward with some proof and try to parlay it into some kind of hollywood brainstorming career or something.