With hindsight, yes! But remember in the first few games of the world cup last year, the referees were as far as I can recall criticised for stopping the game too often to look at replays of what often ended up being nothing.
I hope the props that were sent off weren't the Navy tighthead and the Marine loosehead. If you look in the background between about 0:05 and 0:10, they can be seen having a bit of a grapple but then seem to decide that they don't want to go there, so end up having a bit of a hug. »