I did this with Pally/Mage/Mage/Priest/Priest with no problems and like an idiot I didn't use fear ward at all (not that it would have mattered a lot in the long run, got feared way more than 2x per 3 minutes).

I have a follow hotkey, I'd run around and gather my alts up, spread them out and position the dragon at max range while they dps and heal... the dragon doesn't hit hard, and agro sticks to tank... so when the fear bomb hits, do another lap, gather the minions, spread them out, and start dps again. The fight took me about 6 minutes.