I think they now claim to have "reformulated positively" that statement (i.e., gave them a little more wiggle room).
From http://peacebyjesuscom.blogspot.com/2011/09/contradictions-in-roman-catholicism.html:
• RCC: 846 How are we to understand this affirmation, often repeated by the Church Fathers?[335] Re-formulated positively, it means that all salvation comes from Christ the Head through the Church which is his Body:…Hence they could not be saved who, knowing that the Catholic Church was founded as necessary by God through Christ, would refuse either to enter it or to remain in it.[336]
Any person who "knows" that the Roman Catholic Church is the only way to be saved and rejects it, can't be saved. Of course, those who don't believe the assertions the RCC makes for herself CAN be saved by believing in and following Jesus Christ as Savior without belonging to and remaining in the RCC. Got it? ;o)
LOL I can’t even imagine an intelligent, reasoning person falling for the double speak of the RCC. It’s astounding to me how people can be so indoctrinated and blind.