Fettered Monstrosity and being pushed around

Maybe this is a problem specific to warrior but whenever I encounter a rare Fettered Monstrosity I want to pull my hair out. The thing is as large as semitruck and keeps wriggling around. You get permanently bodyblocked, pushed around and constantly keep missing bone shatters and auto-attacks due to his movement. But just now I had the pleasure to meet one with temporal bubble and volatile plants. And my God the absolute cancer that fight was - culminating in a crescendo of being pushed by him into one of the purple orbs while I was dodging - absolute cinema.

While we're at it: nerf the volatile plants already. A 50% nerf to them and they still would be a very serious threat.