the logical explanation is that when you tackle someone and they get concussed it's looked at. Any tackle that pins both arms and results in a concussion is going to result in a suspension. There is no way we could possibly win on appeal.
I'm not agreeing with it, I think it's fricking stupid but the AFL are covering their own arse. I don't understand why they don't just come out and ban tackling someone to the ground.
It is a joke of a rule and a ridiculous suspension. But like you, I just can't see how it would have been over turned, and quite clearly the Club saw it the same way.