If you have an orb and you get the lightning puddle it will distroy the orb. So if you get an orb just taunt the boss back and take the next puddle. What you discribed is what the tanks on the TFB clears I've been on will do if they can. We still have dps go out too and try to pick them up just in case as tanks do have a lot on their plate as is. Basically keep the orbs off the healers and everything will work out fine.
This is the important thing to remember. If a healer gets an orb, it's usually an auto-wipe. If I see an orb with no gray circle that hasn't agro'd on someone, I'll generally give it a whack just to ensure it doesn't wander over to the healers.