Man.. Annoying, I didn't read upon him and soon as I aggroed him he tossed me in the water and I got killed by the fishes.
Also, if you pull the mob in front of him he will come too so be prepared.
Lastly, I personally noted when he tossed me my attack came off, but I think that was because he tossed me into a wall and i was sorta.. like wedged? not 100% only killed him once