Banned means:
In cases of blatant wrecking or a refusal to comply with CTRA rules, admin decisions or demands, a permanent ban may be asserted. We do not permanently ban drivers unless we are convinced that allowing their participation will undermine the racing experience of other drivers or will jeopardize the integrity of the CTRA system as a whole.
I don't think you'll be unbanned any time soon unless you have a VERY good story (better than the one you've told us).