there is actually trick to the tank and spank portion. if youre using shamans, drop some scattered poison cleansing totems. it helps with the poison spear he throws.

also positon your shamans at max casting range from him because he does do a whirlwind where he ignores normal agro for awhile.
the trick to that part though is to let him start the whirlwind and he slowly starts whirlwinding towards your shamans. let him get about half way and then taunt him back towards you. you take no damage during the whirlwind and he just harmlessly goes back and forth. just hope your taunt doesnt resist.