IIRC a speedrunner was able to jump so far it didn’t trigger the fight.
If I'm remembering right, the devs actually watched a speed run with someone jumping over that scene.
Afterwards--it may have even been the next patch--you could no longer jump over that cut scene. I haven't seen anyone get past it in a long time. Maybe it's worth trying, say, a sorcerer with a distanced misty step? I doubt it will work, but I haven't tried it personally, so I can't be sure.
