Controlling the enemy dps proved to be as important as controlling the healers on heroic for my raid tonight. The rogue was a real PITA rapidly killing our clothies. No healing is sufficient to counter the burst, especially if other uncontrolled enemy dps classes focus on the same target, as they usually do. We later tried killing the rogue fast while we kept one healer CCed to minimize his carnage time, but it didn't work out well. We kept losing too many raid members to win the fight.
I noticed pets were given a rather high priority in the kill order by the Tankspot strategy. Are they really that dangerous? Just like in real PvP, pets are tauntable, so I just had them beat on me for some very welcomed rage.