It looked like CHN tried to jump over the first defender, and that's why when he got ankle tapped he went flying head first into Hetherington who had no time at all to react. I remember being taught never jump into tackles. The accountability is being put 100% on the defender and that's not the way it should be. A player could theoretically dive head first at the defence line to get a penalty and win a grand final. As unlikely as that seems, the interpretation of the rule allows it to be a possibility.
