While in the tunnel I did the back break hug move, dropping the guy threw the the map, he didn't die, but couldn't get to him. As we hit the finish, needing to kill him, it errored and booted me. Then the next game, On the last strike, last kill, I was booted as I was bringing down the mace... Awesome...

May need to check the map there for holes in the edges in the tunnel in the center of the viking docks.