If we were talking about a genuine Dominican superior, I would defer to your words with no argument. But let’s back up one moment: this Father Cyprian is not such a superior, is he? Is he not merely a usurper who seems to derive his authority (such as it is) from other usurpers, and schismatics? Is this man really an authentic Dominican superior? Or is he merely a flunky of the Society of Saint Pius X? If the latter (and that is my own interpretation), I don’t know how much respect any of us is bound to show something like that.
That having been said, I think what I’ll do is merely share the explanation he offers, rather than “post” his verbatim response. That’s a general courtesy, anyway, that has nothing to do with the writer’s position or authority.