As an affliction lock i do way more damage than anyone on a fight like curator. He is usually down in one evocation pretty easily. Our strat is a little different from the norm but it works for us. MT tanks curator and about 3 feet behind curator is the rest of the raid all bunched up. The two healers stand a few feet behind the raid. One is almost always a sham for chain heal, and the other a pally. I am the hateful bolt taker and keep constant dps on curator. Basically i just keep all dots up on him and SB adds when possible. Time amp CoD and thats an easy 25-30k dmg during evocate. With 3 locks timing it right thats insane burst dmg. I would have one of your locks take the bolts and have the OT you are using, just go all out dps on the adds. They should drop real fast. The two locks on the adds shouldnt cast any dots on them. if they are dying as fast as they are supposed to, no DoT will tick to the point where is is more dmg than just spamming SB or Searing Pain. Grouping up works great for us but results may vary. I had my brothers guild try it this way and they killed him first attempt, and they have been working on him for that whole week.