18 day Deserter Debuff

Hi. I haven't been logged on in over 3 months. For some reason, when I logged in today (on my Paladin), I have a 18 day deserter debuff. Relogging doesn't fix the issue. Help would be appreciated. Thanks!
Realm: Nostalrius PvP
Character: Kronite
Realm: Nostalrius PvP
Character: Kronite