Once the strategy for dealing with the slimes is established and practiced, the rest of the fight is fairly simple. The Rotface tank pulls the boss and positions him in the center of the room. The rest of the raid immediately stacks up behind him. The first Mutated Infection occurs maybe tend seconds in to the fight; from there, the strategy for kiting the slimes is followed.
There are two other things that the boss does that the raid needs to be conscious of. At regular intervals, slime will flood portions of the outer ring of the floor. This slime should be avoided by the kiting tank, and by raid members scattering for the ooze explosion; standing in it causes significant chunk of damage and also reduces movement speed. At most, half of the outer ring will be flooded at a time.
Rotface also regularly does a Slime Spray. He will target a random raid member and turn toward them, then do a cone AoE of slime in that direction. Slime Spray is not as deadly as a slime explosion, but it is damage that can easily compound and should be avoided. While the AoE of slime spray is very difficult to see, it's very obvious when Rotface is casting it; he turns away from the tank. Rotface will also turn toward someone when he is casting Mutated Infection on them, but will then immediately turn back to the tank. If you have an addon such as DBM, you can simply watch the timers to find out which of these two things he'd going to cast.
The Slime Spray is the reason to break the raid into two discrete groups. If Rotface turns to face one of the groups, the players should know a Slime Spray is coming and simply either run through the boss, or strage over to where the other group is standing. As soon as Rotface turns back to the tank, the group should return to its original place.
Slime Sprays will also occur when the raid is scattered for a slime explosion; players need to be aware of this, and move out of the way if the boss turns to face them. The kiting tank will also sometimes be in the path of Slime Spray; there's nothing that can really prevent that, and the tank will simply have to be healed through the damage.
If the raid follows the slime strategy, and avoids standing in the Slime Spray or running in to slime puddles when scattering, everyone should be able to keep themselves alive. After that, it's simply a question of the DPS output to determine if Rotface can be downed before the slimes become unmanageable.
Bloodlust/Heroism and other long duration cooldowns do not need to be saved. In fact, it's often best to use these cooldowns at the very start of the fight, when the infection rate is at its lowest and most of the raid will be able to simply stand and DPS. The very first Mutated Infection victim can even be cleansed and allowed to stand in the raid with a small slime attacking him or her while continuing dps, as long as they are certain to get out of the raid as soon as the next Mutated Infection comes. There is no reason in this fight to save dps cooldowns; the dps rate decreases as the fight progresses due to the increasing rater of infection and the shorter intervals between slime explosions.