You might like this take on Andrew Sullivan and his friends at NRO: http://www.chroniclesmagazine.org/cgi-bin/chronicles.cgi/2005/05/03#Tom_Piatak.Saint_Paul,_Call_Yo
I doubt Michael Novak was dissenting from Church teaching. He is usually pretty good on that score. I think he was just trying to be polite and try to reason with Sullivan, who is anything but reasonable and polite on this issue.