Yeah i hate those groups, mostly the dps are the ones who do it. As a tank i only stop pulling trash when the healer is low on mana. Even had a healer do the whole "go go go go" thing while they are still drinking at not full yet.
But to piss em off when they say that i just reply, "You want me to pull slower? ok will do just for you %t".
So far I'm loving the skill comes in handy i use the skill i get all the time but wonder how many others actually know what it is and pull it out.