I know what you mean, but I would rather they use the TMO for things like this instead of giving a bad decision and then ruining what would have been a great game. I think they should tone down the TMO usage though.
I actually re watched it and the reason for him going to the TMO was to see if there was any foul play afterwards. I'm not saying it should have been yellow because it 100% should NOT have been. I'm simply saying the the ref had already made his mind up about Bismark and was checking for any off the ball stuff afterwards.
Have to say Jonboy, you are the only one who feels that way. I don't see how you can think the first one was high when it was around the chest. It wasn't even a penalty. It was an absolute beast putting on a massive shot on a fly half who unfortunately was injured. Otherwise, absolutely nothing wrong. The second incident was debatable.