Zoltec High Priest from Vaal mechanic Dived into the Terrain in Khatal and Stays Perma Under

I spawned the Vaal mini boss Zoltec High priest in the Pools of Khatal in interlude, and perhaps because I have a sources of pushback, hinder, slow, and temp chains which has bugged many bosses behaviors already into going into incorrect places, he dived into the terrain and is stuck underground. I cleared all around the map looking for him and his health bar will show back up, but he is stuck under the ground permanently and now I can't get the temple charge.

I think you need to do a complete remake of all diving monster behavior. They all can get permanently stuck under the ground, appear in non-passable terrain and sometimes remain there (like the fish or lizards popping up inside the walls of Matlan waterway, and sometimes refuse to just reappear at all (such as when aggro locked to another part member and refuse to appear for anyone else). They are just infuriating, even when they act properly. I am sick of waiting for diving monsters to choose to appear only for them to hide again!