It would have to be one heck of a surprise. If they had it, they would likely have used it in South Carolina. If they do not before Florida, it will be far too late.
The magnitude of the win in South Carolina and the composition of the groups who voted for Newt mean this thing is actually all but finished. Santorum has lost his best hope to Newt in SC, where their numbers were greater. Romney’s 25% is nowhere near enough.
He's also destroyed his political career.