I was working through this area on my level 95 monk. She has two katars as weapons. During the battle with the final boss: Drusella Sathir it kept saying she disarmed my helmet. Either she should be disarming one of my weapons or is she is disarming one of my weapons and the message is incorrect.
Even though this isn't a bug, I'm glad I posted it. The "Skulling which disarms your head slot" made me chuckle. It's pretty funny and creative.