Perth will always be dangerous tactically under Poppa. For Rudan this is about showing he's just as good coach as all the other guys (as evidenced in his stoush with Corica). I expect competitive showing by the Nix and am not surprised by resting just Dura while also ensuring he was not still on 4 yellows afterwards.
I also appreciate Dura's good manners. If you desperately need to get a yellow you do not have to kick some poor sod in the groin to get it. But I will not add anything further to that particular topic.