Just want to post a comment on this:

Each pack consists of 2 dps'ers and a healer. Put your shamans in the middle and pull one pack towards you, burn them down and move on to the next. Directly after killing the third mob pack, the boss will aggro you.
The last part about the boss aggroing you is not true. They just move up a few paces, so if you are far enough back they will stand there and let you drink (Paletress or Egan(sp)).