Having just played catch-up on pts 2-4 I'd say PJ Maybe stirring up the citizens to add to the Day of Chaos? Would he do a 'Ambrose isn't dead, I'm alive and they Judges tried to kill me' number? Obviously his DNA would be able to prove he is Ambrose The Major as much as the judges used it to prove he is not Ambrose the Man. Crazy cits would believe him no matter what back-story the judges reveal. A sorta reverso-Obama birther controversy undermining any faith in the judges / democracy-as-it-is.