Small government people (fiscal conservatives) and moral people (social conservatives) are the same people. I implied something different in my previous comment, was that was mere clumsiness on my part.
I believe that personal responsibility and accountability are enhanced when government is small and people have to stand on their own two feet or die.
Rick Santorum may not be both socially and fiscally conservative. I would argue that if he is fiscally Liberal, than he is also probably far less "socially conservative" than he might want to believe. Big Government people are inherently enablers of bad behavior.
If you abandon social conservatism, government fills the void, and you get big government. You cannot separate the two. For years I believed it was possible, but I was wrong.
I have debated several "social conservatives" on FR, who would be willing to throw "fiscal conservatives" under the bus if, for example, a budget reduction on welfare might have the effect of causing more welfare moms to have abortions, or if a change in the law which would have the effect of discouraging unwed pregnancy might make things harder for welfare kids in the short term.