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It was a penalty and yellow Card. The Blues player was standing to the side of the "gate" and intentionally knocked the ball down. Professional foul in the red zone. Like I said above do it quickly and with authority and play on quickly. The Crusaders and Blues in particular do this type of thing regularly and get away with more than not.
The more I think about some of those moments in that game, the more filthy I get. No excuses though, Rebels need to improve their defence and strength more, so the ref can't be the person who determines games like that.