Originally posted by Accused:

Tame the Lox, set them free.

Ollie ollie loxen free?

If you get adds in a boss fight, run or terrain boggle the boss and kill the add. If its lox, you are in bad location or forgot to kill it before the fight started or just bad luck. Lox used to be friendly, but their new large aggro radius has made them difficult and you should clear them out or find another alter or sadly make an arena to fight in (lofted terrain with places to hide and heal or something).