Description:
It's possible for the tank to get knocked out of the arena. When this occurs, Garuda's fight script is broken. She stays on the same location, only does normal attacks and will not go further into the fight script (no plumes, no sisters, no storm eye, etc). The party can just burn her HP down to zero.

Steps:
This only occured once and I haven't tried to repro it. So here is some general info.
- This occured in Hard Mode.
- The tank was very close to the rock when getting knocked back.
- The knock back on the tank was caused by a "Slipstream" attack from Garuda, after the first time she teleports in the middle.
- After being knocked back, the tank was about 10 meters away from the rock, outside the arena. I do not know if he was able to move or not.
-The tank was a Paladin.

Good luck!