Saint John Paul was speaking from superstition.  Real marriage marriages occur beyond discussions of intrinsic evil.  The intrinsic evil in questions of divorce and remarriage happen to the people involved.  What is intrinsically evil is for the Church to demand practices which deepen their pain.  In the reality of pastoral ministry as it existed before Amoris and even before Veritatis, pastors heard confessions and blessed remarriages which have lasted (as well as other civil marriages and probably in the future, gay marriages) to ease the burdens on the faithful rather than make them heavier.  Indeed, the four ex-bishops who are yelling from the cheap seats are like the pharisees whom Jesus condemns who used the Oral Law to pile burdens onto the Jewish people for the same reasons of moral self-righteousness and personal (and prideful) purity. Prostitutes and the remarried will enter Heaven before these four.