I took this boss down Saturday after many previous unsuccessful attempts. I used KAC's diagram for positioning and certainly worked for me. While the urge to nuke as fast and hard was there all the time, I realized it was only getting me killed - finishing casting before moving. Hence, I focused more on surviving than killing him. I run a DK tank, 3 Ele DPS, and a healer (either Pally or Shaman depending on my mood). On the first kill, I had one shaman down. The next day, I took him down without deaths and on the first attempt.

Really important to pay attention to the saronite and just play it cool. He'll die eventually.