I was trapped at the bottom of a ruck and getting a serious slippering. I was trying to get out of the way and the ref pinged me for not moving. I told him I was trying to get out of the way, he replied, "not hard enough".
totally agree with proptank - there is no way North could have predicted that Folau would have hit, let alone injure, Barnes. Plus for him to go down like that would be uncommon amongst most professionals. Good point about the clearing out too - there's lots of bridging now that exposes an attacking player's neck and top of the spine, it's only a matter of time before there's a serious collision that does damage to that area.