Quote ="knockersbumpMKII"I thought the rule was you have to pack down a full 6, the penalty of having a man sent off is losing one in open field, incl at scrums. The only reason not to as alluded to above is for injury. If as a team of 12 you pack down to get the clock stopped, you can't do that with only 5 players.
Possibly just overlooked as was much else by the officials.'"
Wrong. They have the choice whether to have one less at the scrum or the line. Teams often have the full scrum in attack to allow the loose forward pick-up and counter the push, but a depleted scrum in defence so the back line isn't short.