Does anyone know what 'liable to sanction' means for feigning injury? If it means they're liable to be penalised then it's not much of a deterrent. I would have preferred to see 'liable to a yellow or red card and suspension'.
My comment was centred around the fact that he's in front of Cole and literally has his arms and body wrapped around him to protect him from tacklers. Let's put it like this: if Vunipola had disappeared into thin air a second before the tackle would Guirado have tackled Cole? Yes. Did Vunipola act as a screen and prevent that tackle from being made? Quite clearly yes. I don't really understand where the doubts are.