Iron Claw bug during Acheron Boss Fight (Labyrinth of the Ancients)

Time: 1:20pm PST
Frequency: Once (have not been able to retry)
World name: Hyperion
Character name: Neon Zero
NPC name: NA
Monster name: Iron Claw
Class/Level: PLD 50
Party or solo: Party (alliance)
In-game time:1200
Area and coordinates: Final Area of the Labyrinth of the Ancients. Acheron boss fight.
Steps:
1. Got immobilized by the Iron Claw.
2. Alliance defeated Acheron and I was still being immobilized.
3. Upon exiting the cutscene. I was still under the effect of the Iron Claw, immobilized and taking periodic damage. I could not move or perform any action aside from looting, commendation and leaving. I could not even logout or exit the game because I was 'being attacked'.