As a ref,I would have shown a yellow for the swinging arm. The game was getting a bit tasty with a couple of tit-for-tat incidents in the few mins up to then,that would have collected the thoughts of both teams, 10 min in the bin in a semi,with the points loss that usually means, too much to risk in a tight game for a free shot. Shove in the back in the context of what had just happened,a telling off as Tuilagi took the walk, no reversal or card.
The punches thrown by Tuilagi, yellow,red,red. Rules are that striking in the face is a red, on the ground, the reality is that we take other factors such as damage,provocation,intent into account.I would suggest the damage was severe,the provocation mild and the intent severe.
Up here,anything dealt with by a ref,is finished,you cannot then cite the incident.IMO Tuilagi has had two results in the last week, both on Sat and yesterday.