You could disband your unit, then you wouldn't be attacking the region and could leave furtively.
Ahh, I completely forgot about that, cheers. Would have lost quite a few points of honour/prestige because of many injured men, but worth it to not be locked up for 7 days
If you have 6 hours, then you should be able to leave. You only get pulled back in if you have travel 0-2 or 0-3 hours.
The battles used up the hours so I only had 3/4 left both times I tried to leave.