Again you and others mention it but his left arm being pinned is being overpowered. The direction his momentum is going it’s unlikely even with it not being pinned that he would be able to do much with that arm, his right arm is the one open and that is the best chance to break the momentum.
As mentioned, Football accidents happen and this is that.
Sicily is pushed by Coleman and proceedingly dives to tackle McCluggage around the hip. He is able to grab a hold of his left elbow which slides down to his hand around his thigh. McCluggage is caught HTB, but before this McCluggage is running through in the direction the tackle went, his head is downward which creates momentum going into the ground, it’s down because he’s obviously collecting the ball. Sicily does that and he then pulls him toward himself, which is what is taught by the AFL.
This is a perfect tackle, it’s just an unfortunate incident. The thing people mention is the roll over but by the point of that the tackle is complete and Sicily has little control of McCluggage, but he rolls him over once he has taken him toward himself. The contact is made majorly by the pulling toward himself not the roll, the roll is merely him getting up after the tackle.
Brockman coming over the top could’ve caused momentum changes to McCluggage but can’t be determined, however it is clear and that proven by the biomechanist that Sicily had lost control of the tackle once Brockman came over the top, or he lost a lot of control. Which also comes into the fact of what else can he do, and he did all he could.
