The Shado Pan Enforcer guards near Nalak are now level 100. If you pull Nalak to them, they aggro and kill him after a few minutes. I found the best spot to be south of Nalak in the Bloodied Crossing. The four guards there should be enough to kill him. You may have trouble staying alive while kiting Nalak if you don't have any self healing or speed boosts, so be careful. Had trouble kiting him on my Rogue, but found it easy on my BM Hunter and Monk.