WotLK My felhunter has been challenged to honorable combat

[buhehe]

My felhunter has a debuff that won't go away: Challenge Flag (Challenged to honorable combat)
http://imgur.com/OFOqFK4

This is applied by players to mobs in one of the quests for the Ebon Blade in Icecrown, evidently my pet has been marked by another player doing that Q.
The debuff has no effect whatsoever but it's fairly distracting.

Things I've tried:

- Dismiss and resummon
- Summon another pet and resummon
- Let mobs kill felhunter and resummon


There have also been a few server crashes since this happened (a few days ago) which didn't help.
Any ideas?

[Zelta]

Please, open a ticket in-game. GameMasters are able to debuff.