I had multiple tanks in a small area a few days ago. While they didn’t quite end up clipping together and sending each other flying they were definitely running into each other which was constantly causing blue sparks to fly around (the type you get when you hit a weakspot). And I literally just witnessed endless spawning ticks sending dead Hunter bodies ragdolling around, so I could easily see what you described happening. Either getting flung into water and exploding or clipping through the map and into the void