Well, he quit black metal anyways:
http://www.decibelmagazine.com/featured/nocturnal-poisoning-qa-with-the-artist-formerly-known-as-xasthur/
"...music, creating, it’s like therapy for me, and if you have a therapist who’s making you more angry and not doing you any good, you fire them and think about getting a new one."
But maybe he was never really IN it:
"The music itself only had a firm grip on me for a few years... I never learned anything from it, musically or aside from that; it never “empowered” me or anything like that. I don’t think anyone would be able to tell me what I’m missing out on by not having it in my life anymore."
this is the posuer black metal version of when a rock band tells the press its new album is the best and heaviest thing it's ever done.