These people honor me with their lips, but their heart is far from me

Some Protestants don’t view Roman Catholics as Christians, and won’t acknowledge the Roman Catholic Church as a true church. A Reformational Catholic regards Catholics as brothers, and regrets the need to modify that brotherhood as “separated.” To a Reformational Catholic, it’s blindingly obvious that there’s a billion-member Church of Jesus Christ centered in Rome. Because it regards the Roman Catholic Church as barely Christian, Protestantism leaves Roman Catholicism to its own devices. “They” had a pedophilia scandal, and “they” have a controversial pope. A Reformational Catholic recognizes that turmoil in the Roman Catholic Church is turmoil in his own family. 

http://www.firstthings.com/onthesquare/2013/11/the-end-of-protestantism

So does Leithart think the pope is his pope? Some people formally convert to Roman Catholicism, but Leithart illustrates the fact you can cross the Tiber in your heart. In his heart, he's already a child of Rome. So what's he still doing in the PCA?