There seems to be a continuing misunderstanding as to what the term Separation of Church and State means.
It refers strictly to having a religion run and endorsed by the State and nothing more.
Everything else that has been interpreted by the media, the ACLU and the Courts is to a great extent wrong.
Regardless of what Santorum meant, or what the Establishment Clause means it is a political blunder. Rick opens his mouth, and instead of spending a week talking about things Obama is vulnerable on (jobs, growth, debt, gas prices) the media is going to go on a week long tangent about the separation of church and state. Just like they did with the Satan comment and the contraception comment.