Just downed him heroic. Here's what worked

1 - Shadow Resist Aura
2 - Spread your dps out. When he jumps, I have up arrow move the toons forward then they just turn to face him when they are clear with my Follow Focus macro (focus = tank). I've got ISboxer set up to spread them out in four directions back and carry on.

That's it. I tried auto-follow (without shadow resist - not sure if that helps, haha, but I got him down with 3 toons up, vs wiping before).

They start in the yellow, tank pulls DoS to the red.



(Having mad gear doesn't hurt either)