Screenies i should have uploaded in first post, excuse my noobiness.
ok, 1st part take out the 4 mobs in front of the gate
2nd part, you see the small box on the inside of the gate to the left, jump on that then onto the gate (fence) and move slighty to your left and back a little, so it looks like you hanging on with your toenails.
3rd part, pull boss, the wargs will bug out below your feet but the boss will not.
Dont go too far in you will start off the encounter before you get chance to get on the fence.
EDIT, 2 people is reqired atleast for this to work, it cannot be done solo (unless your a healer class) as i've just tried it and you need someone to pull the boss by walking close and then jumping on the fence. I did this with burg and was easy enough but died due to lack of heals.
This is an easy way to kill this guy with 3 no doubt.