It is theologically incorrect to call the Catholic Church the "ordinary means" of salvation, since as murph has pointed out, the Catholic Church has declared and defined that She (not murph, but the Church) is THE means of salvation. That's Catholic dogma. Modernism would dearly love to pretend that this isn't the truth, and that there are "extra-ordinary means" of salvation, but the Church has not stated this, and in fact, has without a doubt ruled it out. Completely. There is, in fact, absolutely and positively no salvation outsdie the Catholic Church according to infallible Catholic dogma.
Yes, I worded it wrong. I am not a theologian, obviously. What I was talking about was the visible appearance of belonging to the Church.
One can theoretically not visibly belong to the Church, yet be connected with Her in a mysterious way.