I don't know if the power to ban is extended to Moderators at SF. Shawn Brink is an Administrator, just not the site owner, but most certainly has the power to ban members. It could have been Brink; it could have been z3r010.
Who is Z3ro1o? Do you mean John Fairbrother,when you say Z3r010?
Yes, on most forums a moderator can ban you from the forum. But the admin can overrule a moderator and re-instate you if they want to. And so can the owner if he gets involved with the members.
But in a lot of forums,the admin is in charge of who gets banned and who doesn't. And the owner just keeps out of it in most cases.And leaves it to the admin to deal with. Andrea Borman.