If you have click to move enabled...
Interface Options - Mouse Options, check the box.
Or "/console AutoInteract 1".

And you have a keybind for Interact With Target.
And another for movement to all toons.

Hit your IWT keybind.
Which will have all of your toons turn to the target.
And begin running at it (to melee it to death).
(Range on this is about 3x as far as /follow, which is excellent for recover from a fear bomb).

Then you press your movement key (down arrow, for example).
To break the follow.
You now have all of your toons facing towards your target.