Auric Skyreaver was a Starcraft campaign–making globe-trotting self-aggrandizing Australian lawyer dude who only stuck around long enough to piss everyone off. He announced his intentions to finish Antioch 3 about fifty years after the last person stopped caring. His credibility was...slightly dubious.
He was never banned; everyone just scared him off.
Some quotes about the legendary Mr. Skyreaver:
"A-aim for a b-b-big asparag-asparagus-Zzzt! Or t-t-tapioca. Whatever the <squeal!> d-dingo says." —Sectoid Hunter
"SHUT YOUR FACE AURIC, MY MOMMY SAYS I'M THE MOST HANDSOMEST BOY AT SCHOOL, YOU JUST SHUT YOUR FACE!!!!11" —Freh
"" —Dark T Zeratul