I dunno why the 3rd Ump can't have sole authority on front foot no-balls. They've got the tech, they've got the time. And it would mean the ump in the middle doesn't have to shift his gaze which would help him judge things better at the other end. It does seem a bit rough on Smith to be honest, the only thing he did wrong was shake his head a bit. I know they're tougher on captains, but still that's pretty weak.