I am almost certain that Zezima still owns his account, it would seem highly unlikely that anyone could pose as him when he is in contact with so many jmods/pmods.
I don't like to admit it but I look Zezima up every so often because I like to see whether or not he's still playing, and I'm glad he is, to be honest. His levels are still amazing and it doesn't seem like he's fallen behind too much.
I wonder how much zezimas account would be worth? Or if anyone would even buy it considering the high social status it carries, would attact attention easier.