Well, the border commanders hate you, and also the Archbishop of the Eastern Diocese hates you, so that'd probably spread to the neighboring regions; at that point, if you applied for asylum, the monarchs would probably weigh the costs of pissing off the border principalities they want to annex versus just hogtying you and handing you over. Of course, if you just left and kept your head down, you might reasonably be able to escape, but at this point I'd just end the quest. After all, if you leave and survive long enough to change your identity enough to get the heat off of you, well...at that point you're a hypercompetent protagonist in a field without the kind of opposition that would make the game interesting.
In other words, adopting the build, completing the mission, and then skipping town to keep your head down would work, it'd just also result in your "win" and a really short quest.