While playing multi-player, I used a (Strong) Solar Eruption to fight the cultist, during the fight I died and the kill message read "Themessy was killed by Solar Eruption." (or something very similar.) I had run over a teleport pad moments before, not sure if that's relevant. I respawned and after a couple of hits died again by Solar Eruption, my character animation showed for a moment me apparently holding the weapon and I was taking fire damage and explosions as if the weapon was firing at me as an enemy. I could not swap weapons or click to stop using the weapon, it was perpetually in use on myself when respawning. (I could move however and was running around taking damage before I died each time.) I took a screen shot of multiple kill messages and the fiery animation that persisted throughout respawning.