It happened again when I played after the update but with me at the caves this time and the circus ladies showed up. Still have no idea what is going on with it. Also the message changes to something else each time you try to get rid of it.
It triggers on the player if they use the slippery type weapon, it misfires and hits someone at random (including yourself apparently). I had it happen to me 2-3 times back to back and it made me kill two of my teammates.
