I'd say they should stop trying to block him, just giving more ammo for him. OTOH, I do think he and those that continue to ridicule those that are not for him are creating a real division intentionally or not. Many that may have changed their minds are taking it very personally at this point.
His bringing it up at the beginning of his speaking today that they were 'crushed' may feel good, but is it in the long run? Same with his talk regarding contributors, 'It would be good to be unified, but I can do without them.'