Ok, I know there are a few threads about Vortext, but I didn't see any about heroic specifically.
Ok, I cleared this with 1x druid, 3x ele, and 1x resto shaman
ok, for the LAST boss here's the TRICK.
When you see him cast STATIC CLING or whatever, SPAM JUMP!!! I avoided this on all my guys about 4 times. And it made this so easy. All my guys were clumped together, chain lightning wasn't a problem.
For the trash leading to the last boss, you will need to Hex/CC the healers they are a pain, I wiped on trash at least 10 times.
For the SECOND boss. I put all my shamans against the walls in each corner and it made it 100x easier, I was able to one shot him. I didn't worry about the wind position. Someone mentioned this on the forum, I couldn't find your name, so THANK YOU, that was a massive help. I tanked in the center of the room - it was a piece of cake.