What does it mean to be a Catholic? II

I would like to probe further Eduardo Penalver’s August 31st statement that, “I am Catholic (although perhaps, based on what he says in his post and what he knows of my views, Fr. Araujo disagrees with that statement), and (I'm quite sure Fr. Araujo would disagree with this) I believe I would continue to be Catholic in some sense even if I attempted to completely sever my ties to this Church into which I and my ancestors were born.” I am interested in the sense that Eduardo and I would be Catholic if we joined the United Church of Christ or the Anglicans (the former would deny that they are Catholics; the latter , as I understand it, would maintain that they are Catholics, but not Roman Catholics). I assume Eduardo means something more than the values upon which we were raised would not leave us simply because we changed denominations. Presumably Father Araujo would agree with that. Moreover, I am intrigued by Eduardo’s position that the Protestant Reformation was a conflict within Catholicism. I doubt I would be persuaded by that, but I would like to hear more. I am already inclined to think that God’s saving grace will not depend upon the denomination to which we belong and that the People of God are not confined to Catholic Church members. But I would like to hear a little more from Eduardo – no rush!