[Striiker]

Once you turn in the pearl, the human form agros you. Once he's dead, the dragon instantly pops and is KOS so you'll be fighting him right away (as Splorf said, you can delay the dragon agro if you pull human form out..). Have your raid in the room with you when you turn in the pearl and have them raid buffed and ready to rock. Get someone to snap agro off you and kill the human. Have high magic resists on everyone because Ragefire procs an AoE fear spell (Dragon Roar) and it really sucks to see a train of your DPS, tanks etc doing the walk of shame out of the room from the fear spell. You can position your casters around the corner just before the bridge to mitigate the AoE.