Over the summer I had a student come by my office to get some documentation for fall registration. It was a purely ordinary, businesslike affair--he is one of my advisees, and I see him every term. This summer, however, for the first time, I learned something new and rather startling about him. He is a Neo-Feeneyite. I write "Neo-Feeneyite" because he told me that he rejects Fr. Feeney's view as having been condemned. But he then went on to insist to me that Fr. Feeney was still right about the old "Extra Ecclesiam Nulla Salus" controversy. (For those who may be unfamiliar with this arcane little controversy, Fr. Feeney held that we must strictly interpret "Extra Ecclesiam Nulla Salus" as meaning that anyone who is not a card-carrying member in good standing of the Roman Catholic Church is going to go to hell. This is not the Church's understanding of the phrase, but the phrase does, indeed, capture a de fide teaching of the Church--it must be believed by the faithful.) When I mentioned to him the teaching of the Second Vatican Council on the matter, he told me that Vatican II was "merely a pastoral council", as though that meant that what it taught was somehow not infallible. We wrestled with the matter for a little while, but I soon tired of it and let it go.
The reason I mention all of this is because Michael Liccione has posted some wonderful stuff on all of this--not just "Extra Ecclesiam" but the whole question of the development of doctrine--over on Pontifications. Michael is both a fine philosopher and an admirable apologist, and I cannot recommend his posts highly enough. The comments (over 30 so far) are also very good, making for a fine dialogue.
I've already discussed my view of the development of doctrine in the thread on Just War Theory. The long and the short of it is that I think Michael is exactly right, while my student, though he is a smart fellow, is basically just a different kind of protestant.