We 2 healed it last night.. first kill, we spent a little time practicing every platform and when we started to do real attempts it went down pretty fast. That is the big advantage of that fight, you can start wherever you want, so you can practice if you struggle on one part.
Sadly I was the healer who went dps and telling them "it's not possible", but they made it look really easy.
The adds were really not an issue with a fury warrior, a frost dk, me as windwalker monk, a fire mage, a survival hunter and a boomkin.. every other wave I had my 5 secs stun and the hunter his binding shot, they barely had time to move anywhere that they got typhooned back to where they spawned. We even screwed up by using aoe cooldowns on one wave and we had no issue.
If it helps, there's our kill video:
http://www.youtube.com/watch?v=B5XSKZcIiU8