What nobody has mentioned, and as much as I'm new to commenting on Donstalk I've been following it for years, go to the majoruity of the games, so I'm just gonna say what I think ,,, is that it wasn't the Ref who decided Red , it was the Linesman who was standing 5 yards from the non contact tackle !!!!! You can see Callum Murray not going for his card, speaking to the Linesman and then mouthing the word " Red " before he took a card out , so it was the Linesman who confirmed it was getting later in the game and they might not get a better chance to send a player in Red off ... perfect Hun with a Whistle teamwork