There's two sides to this i think. I can't comment with 100% accuracy cos I'm more or less at the same stage as you. But I would like to make a guess.
When just starting heroics, ur burst won't be high enough to just mow them down before they get to you.
SO..

For difficult packs I could only suggest the following. Drop ToW etc totems at full range, run forward with ur toons (close to agro range) and drop earthbinds and stoneclaws. run ur clones back into position and pull one with your main. whilst ur main is running back into position, have ur clones pound that initially pulled mob into oblivion. the other mobs will be temporarily held up by the stoneclaw and earthbinds, which should allow you, if you are fast enough to burst each one down individually. Just be sure not to pause between kills and immediately kill the next when one goes down.

when ur gear reaches full epic lvl you may not even have to worry. the method ur adopting atm with stoneclaws will probably give you enough time to take down each one individually. If your gear goes through the roof.. then you could probably dispatch the mobs without totems or moving at all :P