Yep.. Ualaa's technique here works very well. The rhino meat was a good bonus as it sells well (not so much now that the expansion is almost here) I have about 400 stacks of rhino meat right now lol.

These toons I used for the initial AoE damage:
Paladin - Concecration
Druid - Hurricane
Hunter - Explosive trap (damage cannot "miss")
Priest - Holy Nova
Mage - Arcane Nova

Also, I would not do very big pulls. The rhinos come in packs of 5 with the odd aggressive grey one. I'd try to get these 5 or 6, then drop the stoneclaw, then use my aoe damage. The idea was to not take so much damage on the toons doing the aoe.