I finally found out what happened to Nefarian, thanks to another Chinese artist.
First he dropped out in 2010 due to graduation duties... then he was crippled in a car accident and now he can't pick up the pen anymore.
Holy WOW. That truly is terrible, for the longest time I wondered what happened to him and feared what could have happened because all his accounts and stuff are deleted. I really liked his work with Warcraft. Oh man I couldn't imagine being physically unable to do something you love like drawing.