Either go here with a full group that is well balanced, or get a high level Druid friend to use his elder spiritualist vambraces and root dot the whole place. ESV have a right click Drones of Doom effect. Friend asked me to help him get the legs. Sad part is, he's a 25 Pally and couldn't do this without a full group. Only sad because not many people go here on our server. Hard to get a group to go here.
I rooted everything around him and snared him to pull him out. Made the Pally solo him while I doted the camp. He wanted the legs, so he had to do the kill. Healed him once before he killed Gongo. Legs dropped first time.