Catch-22 of healing Heroic CryptsFollow

Here's the situation: You're a Resto Druid healing Heroic Auchenai Crypts with a Paladin tank doing Exarch Malaadar. It's a tank and spank until he starts summoning clones of your group members. The clones automatically start attacking the person they're cloned of, using that person's talents, spells and abilities. The clones are immune to taunt and any and all form of CC, including stuns.

The problems begin when you go to heal someone who is getting hit by their own clone. That person has little to no threat on the target, and neither does the tank. In fact, the tank has so little threat on the clones, that even if he does get them off the person being hit, any decently-geared healer is gonna pull threat right off the bat with healing when they heal the person that was just cloned, or heal the tank while in the process of keeping him alive against the Exarch.

The problem compounds on itself, and becomes a cycle of too much threat on the healer whenever the clones naturally come after the healer. You have to consider, this is Heroic mode. Unless your Resto Druid is wearing S1 gear, is uncrittable, and can shift into a 15K armor bear form, he's gonna get hurt. He's gonna self-heal to keep himself alive, which generates even more threat. If he's a well-geared healer, it's going to be hard to do enough DPS to pull threat off the healer, which keeps them taking damage, which means they have to heal more, which means they blow cooldowns, and means they stay in Bear form to stay alive longer while DPS burns down the shadows.

Eventually the Resto Druid runs out of mana, and/or gets piled on until he/she dies, which wipes the group. Honestly, no tank has a chance to pull threat off a self-healing healer without taunts when they're healing themselves like mad to stay alive.

How in the heck do you break this cycle of self-immolation and succeed in healing Heroic Crypts?

heal with lifebloom the one which is attacked from his clone.
lifebloom generates like no aggro and 1 dps can hold the aggro easily against your lifebloom ticks.

and with a paladin tank its even easier. He has AOE-tanking abilities....