Help I am stuck in the Crowbell fight

reference number 2.271.450.398. (and 3.548.900.908. accidently reported twice)
level 64 monk invoker tried to get normal rawhide belts, did damage to "The Crowbell" really fast could not leave the door now he became invulnerable and the the arena is closed.

I am free again logged in and i was outside the fight. Thank you if you did it :)