You forgot to mention your other 14 accounts. Stop wasting people's time.
What about the other part where it said what you were banned for? As far as I know, its not possible for an admin to ban someone without filling in a reason.
I use the same ban button as moderators do sometimes, it's much faster and more efficient. A manually applied ban (which will show the reason, duration, etc) is much slower and not necessary if it's permanent. The "You were banned by a forum moderator" is just the standard message for all bans applied that way, admin or not.