You should, but no doubt won't, hang your head in shame. I am certain that all the decent fans of the hardest sport in the world will find what you posted totally repugnant.

Watched the incident a few times and nothing untoward from Senior in the tackle. It was just a freak occurence. They could do the same tackle another 100 times and nothing would come of it.

As for cheering injuries.

When players make big hits we cheer and rightly so, however 99% of supporters joy will turn to concern if the player on the recieving end is in trouble, but they very rarely are (strange how it always seems to be the innocuous challenges that cause the serious injuries)