The way they talk, the rollback in '07 was only went back to the beginning of '06, and it seems he was here way before that.
Wait, that rollback happened at the end of 06, and they said it was a year, so then '05.
But it's not like this site to give admin positions to people who were only here for a year, and I'm thinking he joined in 02-03 at worst.
/detective mode active