Giganticus Lupicus. Has anybody downed him in live? He's the last boss of Arah Explorable and we can't get past phase 2. Phase 1 is easy. CC Grubs so he can't eat them and stack his power/armor buff. Once he gets to phase 2 and ports around to players and does massive AOE we just get owned. The AOEs don't all appear at once either, so you can dodge out of one into a newly spawned one. They hit for 13k Damage and he often times stacks them on top of each other, so all of my party members excluding me (Necro 29k HP) get insta gibbed. Maybe there's something we're missing, but we just can't seem to get past this phase let alone put a dent in him during this phase.
Has anybody killed him in LIVE (he was much easier in beta) that can give any tips?
Edit: It's not gear either we are all fully "Best in Slot" in exotics.