Perhaps your character was trying to leave Skyrim, was caught somewhere around the northern edges of the mountains that borders Cyrodiil, rather than trying to enter? During a civil war, borders are probably under heavier guard. While I agree on the point of capture, I´d say it's more likely people trying to leave are more suspicious and likely to be caught, than someone trying to enter. Becuse if you were to enter, you'd probably know about the war BEFORE going into the country, and therefore try a more legitimite approach, say as crew member on a merchant ship, or part of one of the many caravans. But anyhow, I'd say the attempt to leave unnoticed, for whatever the reason, is more likely to succeed if you do it solo or in a very small group, and travel out of skyrim might be more problematic now that the Thalmors are calling the shots. Am i on a probable track here?