Jaun is an arrogant asshole, nobody will deny that. But politically, he was immensely useful as the "Hero of destiny", so they let him do whatever he wanted. At least until he blew up half of the castle looking for a demon. Now he's being "strategically relocated" to your tiny town so the bigshots in the capital don't have to deal with him for a while. He, obviously, hates it. He knows he's the only one who takes care of business dealing with threats, and to be banished to some tiny insignificant town where he can't do as good of work is nightmarish.