He doesn't really think on his feet very well. I was a trial lawyer for almost 25 years, and I can tell when somebody has that deer-in-the-headlights look and can't think how to respond to a question (I've been there a few times myself, but I got better over the course of time). But I've noticed in the past that when Hannity gets caught out and doesn't have a response, he blusters and calls names and goes straight to the ad hominem.
He REALLY did it this time -- and to a priest of his supposed own church.
I think you're right . . . Hey, Hannity,
Not a good quality in a live television/radio host!