I gave it another attempt,
I got:
5K GS resto druid
6K GS Ret pally (tanking)
5.3K GS destro lock
4.5K GS elem shammy
4.9k GS fury warrior
We tried: having lock use port out, he died before he could get the cast off
Having me sprint out in cat form, it worked but when I left all the mobs despawned
Zerging him, without any person in tank spec/gear we wiped instantly.
THis is getting really annoying, I just want my giant red dragon of doom