Yes unfortunately, and in the same scene as you
One of those "mind breaker" Duergar on the ship got control of my main character, who previously went through Omeluum's potion experiment and gained that Repulsor Illithid AOE pushback power.
The party was close to the edge because my plan was to simply kill them with crossbows from afar, as I assumed they'd try to shove me if I jump onto theirs. But my character lost control and popped the power. They all flew off into the water and my main character got massacred shortly after.
Ever since then I extremely go tunnel-vision mode on those mind breaking bastards during the fight ^^
