On the subject of the refereeing though, about a minute before the penalty there was the clearest foul you could imagine on Yoshi right down in the Norwich corner, right in front of the Lino - yet he flagged for a goal kick.
FWIW, I do think there was a slight push from Shaw inside the box but Holt was running away from the goal and went over far too easily. Can see why it was given but if that was Man U it would never have been, you can guarantee it.