Side note about Carrion Swarm, it actually hits like a truck for a fairly low Fury Cost. In fact, if you add it to the 8 target AoE profile for Demonology, its a dps increase. Use it glyphed if your group doesn't need/want the knockback, the damage is worth it.
Would recommend 2 healing it in the future ...I've used 2 healers on it every week since the week heroics opened as just about every 2 healing comp minus anything with a monk. Using 3 healers just makes each phase take longer and extending all of the phases increasing the damage the raid takes my a considerable amount of damage which can be avoided by simply having more dps.
Made by dubbelbasse