This is a familiar problem I have seen. One in an old FC and it is happening again to a member in a new FC. I know why it is happening now on the new FC. My friend was playing during the free weekend because his subscription was up. Doing a job quest for ninja, he said that during the battle for the quest he got disconnected and wasn't able to log back in due to the free weekend being over, but now it permanently shows him as online, in Corethas in a battle sequence. I have told him to fill out a bug report and now I'm waiting to see if he finally goes 'offline'. Hopefully your problem is the same and easily fixed.