He was not wrong there. She is a sharmuta; however, he did beat his woman in the best Muslim tradition.
See? They are inclusive!
You know, this kind of jackassery commenting is what turns people off to conservatives. First off, there is no evidence that she was prostituting herself. Second off, if having sex with one partner makes an unmarried woman a slut, then I suppose it makes him one too. It's a two way street and since he most definitely was not without sin himself, he had no business casting that stone.