Let's be honest here. It was the turning point of the game. We more than held our own during the 10 minutes our captain was in the bin and kicked on from there.
In a way it was good old school prop forwardry. Sit the half back hard on his backside and get in to his head.
Was it a penalty? Yes.
Was it a sin binning? You certainly could argue the point either way. It was a late hit when a player was unable to protect himself from the impact. At the same time, this isn't ballet we're paying to watch.
Was it an assault? No chance.