Unless he isn't Erratic. He could be our first glimpse of the Intact. Maybe all of the sane Nonmen, those who really can remember, have been preserved with some kind of manipulation of the Tekne, and all of them are fully under the Inchoroi "control". But by control, I mean willing servants converted to their side via the IF and then psycho-modified to hold the millennium of extra memories.
After all, it was Kellhus that taught us that the most fanatic of his followers often came from the doubters, not the believers. In the end, everyone is a believer, a follower, they just need to be shown.
Really, what are the odds that there is a happy group of old Nonmen sitting around a table, smoking pipes and joking about the old days? Nah, this is Bakker. The Intact will be the very worst, and they will be the enemy.