Blooper?

I don't know if anyone would know this, but I'm wondering if this was a blooper that was left in: in the pilot episode, Once Upon a Dead Man, the day after the robbery, Mac and Sally are riding in the car looking at a newspaper article of the robbery of the sarcophagus. When Mac sees his picture he says, "Well, that kicks the hell out of-" and stumbles over the words "any anonymity". Then he says to Sally, "Try to say that", and they have a little exchange before they get back to discussing the robbery. I was just wondering if anyone knows if that was scripted or if Rock really messed up the words and the two of them ad-libbed the little exchange afterwards. It just seemed way too off-the cuff to be scripted, and it was really funny! I have been wondering about that for a while, it's kind of a weird question but I just thought I'd ask! If it really was a blooper, it was a great fit with the scene!