Tip for quickly dealing with the stasis subjugator on Witness fight

I was add-clearing for the Witness fight and noticed a quick and consistently efficient way of dealing with the stasis subjugator on the right side of the witness fight. While testing out the raid sniper, I setup to shoot the subjugator when it spawned and noticed if you hit 2 headshots when it spawns (1 when it bows and 1 when it finishes the animation) that it flinches, falls off the back of the arena, and dies. It doesn't even rubber-band or teleport back up either.

I didn't test with any different archetypes of snipers or different weapons, but I can attest to an aggressive frame sniper having the capability.