you can leave your shamans in entrance. run around with the pally and pull (retribution aura, avenger shield). bubble out of sight of the shamans, heal. run back to shamans, consecrate and attack as they heal.

you would have built up enough aggro/threat through your ret aura. you can also prep your shamans with the blessing that reduces threat if their threat is too high. also aoe flame totems help when your pally returns to the group.

start off with small pulls to see how much you can pull without having to bubble. if your pally is 70, you can run past a bunch of mobs and start picking up mobs at the far end of the street, around the corner, and run back to your shamans. this works too, and might be better since you dont have to double back with mobs attacking you both ways.