This was the theme of his book. I had thought he had put it away for the campaign as it totally alienates the libertarian (small l) Republicans but I guess he must see some loss of his core base must be moving to Newt and thinks that this will somehow slow the flow.
This is an old clip that has been repeatedly recycled. Out of context it makes Santorum sound like he's ready to send SWAT teams into your bedroom. He's not as limited-government as I would like but the implication of the clip out of context is preposterous.