In LOTRO, I just started getting a weird camera bug. I was fighting a mob and my camera suddenly snapped around and I couldn't readjust the view. Now every time I select an NPC or a mob, the camera angle snaps around to face it and I can't undo it. I've looked thru all the setting ingame but can't find anything that would remotely apply to this.
You may also want to un-bind it. Go into the Key Mapping sections, very last option, and hit the red circle. Make sure the camera snap mode is off first though!