As they continue to foment schism within the Latin Church while remaining within the Latin Church, they are assuredly schismatics. Even if laicised or forbidden to exercise their faculties as priest in the Latin Church, they remain priests nonetheless because ordination to the sacred priesthood is irrevocable. "Thou art a priest forever according to the Order of Melchizedek."
Siobhan
...ordination to the sacred priesthood is irrevocable. "Thou art a priest forever according to the Order of " Thank you for the explanation. Seems rather strange, given that those who side with Satan would no longer possess sanctity of their calling, but be it as it may. Why not just excommunicate him? That's what the Church used to do. Surely, heretics cannot be valid priests.
But I will look up the Melchizedek Order to hopefully gain more understanding of this.