I would say very much yes, and its worth a few attempts.

I would say positioning is the biggest issue to work through. Your likely going to have a lot of adds and movement as his 200k goes slowly it seems.

The whirlwind thing the boss does is what will kill all your guys if they are too close to that its game over.

I would have the non tank characters bunched up on the far wall from the entrance and facing Ribbly Scewspigot so they cannot get knocked anywhere out of control. This is a problem for starting the event on non-tank attempts, but manageable.

In situations where like this where the characters get tossed around, I have them re-follow the tank and then almost immediately stop to re-orientate and then usually walk the mob with the tank.

If all the mobs are on your tank are you able to keep up with the adds with swipe spamming alone? Or do you have to moonspam a bit to get through them? Perhaps a crafted macro to do this rapidly would be useful.