Thank you, Exile, for a sincere and serious response!
The fact that we separate ourselves from communion with the novus ordo establishment is an explicit manifestation of our extra-juridical judgement that it is not catholic. You (Stevus) do this just like us.
Sedes "separate" themselves from communion with the NO Church and Pope due to their extra-juridical judgment that it is not only not "catholic" but a false counter-church. It would then be a sin to enter communion with this false church and pope.
The Society did not separate itself from communion with the NO Church. The NO Church "separated" the Society from "full communion" (whatever that means) with it. The NO Church considers the Society to be inside the Church but in an irregular canonical position. The Society prays for the Pope at every Mass, is not excommunicated, and is in constant dialogue with Rome. Thus the Society does not separate themselves from communion with the NO Church and Pope.
Is Vatican II orthodox? If not, it is heterodox and we must reject it. If it is orthodox (which it isn't), then we have to accept it in religious obedience, trusting that any error in it does not go so far as to place our souls in peril. But we know that these official docuмents do put our souls in peril if we accept them. All traditional catholics acknowledge this. Archbishop Lefebvre consecrated bishops as a response to the crisis. This alone should give you an idea of the situation.
Vatican II, interpreted in the light of Tradition is orthodox. The problem is in its ambiguity. I'm praying one of the fruits of the discussions is a Papal clarification of these ambiguities once and for all. In any case, we do accept the proper interpretation of VCII in religious obedience as ABL did when he signed the docuмents and later offered to Rome that he was willing to accept the VCII docuмents interpreted in light of Tradition. VCII, interpreted correctly, does not place our souls in peril.
Vatican II, interpreted in conflict with Tradition is heterodox and we must reject that interpretation. What CAN place our souls in peril are the heterodox teachings, atmosphere, and practices of many liberal NO parishes and dioceses and these, we must avoid for the sake of our souls. These places often could care less about the texts of VCII and do what they want with little discipline from the Bishops. THIS is the key problem in my opinion.
The question one could ask oneself is this: Can I honestly profess the communion of faith with Benedict XVI? Can I sincerely pronounce the creed with him? Do we really have the same faith?
Yes, we do. Pope Benedict professes the Nicene Creed he says at Mass every day, he denies no Catholic dogma. We do have the same Faith. This does not mean I must agree with his every action or word, but it does mean we share the same faith.
The very concept of ecclesiastical communion has been forgotten by many. And, in my opinion, this is part of the reason why so few people care about the state of the papacy today. Most are just happy when they have their Mass (and yes, the Mass is important and the most precious treasure we have), but if the remnant really wants to work towards an end to the present trials, one must analyse the root of the problem and do what catholics have always done; that is, exposing those who pervert the doctrines of the Church and make them harmless.
But how can sedes expose those who pervert the doctrine of the Church and make them harmless, when they take themselves out of the NO debate altogether by their belief they are a conterfeit anti-church? It seems to me that sede-ism doesn't much concern itself with the NO, but with attempting to persuade other Traditionalists to their view. How does this approach get to the root of the problem.