Does anyone know what happened to PoongKO?

During the UK SF 25th Anniv. Qualifying Tournament last week (Dec 1-2, 2012), while the match between CG.Yota and I'mStillDaDaddy, the commentator Zhi mentioned PoongKO is vanished from the FGC, and he has defected to the North. And PoongKO's twitter is stopped updating since September. Does anyone know any details about him?