Originally Posted by
FuxieDK
Blizzard didn't like, how people cheesed Anuk'arac Heroic, by cancellig food/fortify/MotW/BoK/flasks/exlirs and other buffs that gave you extra health.
By having the buffs in the beginng of the fight, but dropping it in the last end, made the fight much easier than intended, thus they changed it, so you can't remove buffs during combat.
It seems there are some ways to circumvent this, but if they worl, they will be considered exploits, so I wouldn't recommend doing it..