National has already stood van de Molen down from all his portfolios, but it should do more. Parliament has a bullying problem. It is a toxic environment due to those bullies. If it is become better, they need to be removed. And one way for parties to do that is to drive out toxic, bullying MPs (another way is for us to de-elect them).
Van de Molen is already the lowest-ranked MP on National's list. But he's still their candidate for Waikato, a safe rural seat. They need to de-select him. Otherwise, they're effectively saying that his conduct is acceptable and that they want a thug like him in Parliament.