** I haven't seen anything like this posted before so here goes. Also, if you don't feel this is an exploit please feel free to move to the guides section, however I don't think blizz intended for it to work quite like this. **
In Icecrown Citadel there are large Deathbound Wards that will spawn via hidden traps in some rooms. The Deathbound Wards are large skeleton's with a deadly cleave, and are initially stationary and untargetable while on the wall. They look like this:
The traps can be seen by rogues and look like this:
The exploit is to have a warlock use Eye of Kilrogg to walk over and trip this trap. It will free the Deathbound Ward and your raid will then be able to pull it without worrying about the other groups around the room.
This can also be pulled by a rogue and vanish or a hunter and feign, however these other methods aren't as safe. Might also be able to use the Race Car toy to pull too, but you might also get the groups using that.
Hope this saves a couple wipes!
EDIT: Fixed spelling