Welcome, yullback, to The Second Apocalypse.
The issue with this is that, apparently, his experience of torture is something we are lead to believe that all Mandati feel. Like Achamian mentions, the reason there is only one school with the gnosis is because this Seswatha persona has not let them give it up. I think it unlikely that all of the Mandate are skitzofrantic/multiple-personality, and that they all have the same alter ego. Too much of a coincidence.