Santorum Leaving?

Rick Santorum starts his South Carolina speech with a shout out to Newt. Is he preparing to leave the race with an endorsement of Newt - perhaps after Florida, perhaps before? A two man race (with a side of Ron Paul) could make things much tougher on Mitt.

I had the pleasure, and it was a pleasure, to congratulate my friend Newt Gingrich just a few minutes ago... to Newt Gingrich, let's give him a nice round of applause for standing in their and fighting.

Santorum, who always puts family first, thanked his wife and family only after congratulating Newt.