The circled target has only proximity enmity. Don't do mass pulls like this. You are running through the pack already, at the very minimum drop a Flash or Overpower. For spread-out packs, PLD can Lob one, Spirits Within on the second and Lob the third again, without stopping at all. If you have to stop to build enmity then move to the next pack, you can do better.
Please don't mass pull without establishing proper enmity on every target. Proximity enmity is not proper enmity.
You should be doing it so that the healer has no problem giving you regen and Swiftcast Stoneskin mid-pull. Other tanks are doing it. You can, too.