I don't think they should be disqualified; extreme though they may be they meet the constitutional requirement to be President. I don't think we need to tinker with the boilerplate of the Constutition just because we have wierd candidates running. Although I am disturbed by the fire breathing fundamentalism of these two; and frankly think they are both the essence of hypocrisy, I am not concerned about their becoming President. First of all, I have confidence in the good sense of the electorate of this country to reject idiots such as these two. Quite frankly, every Democrat in the country should vote for one of them in the Republican primaries as this will virtually assure that President Obama is elected.
However, assuming the God-awful worst, that one of them is elected, I don't see their overt religiousity as creating problems. First, they will take an oath to preserve, protect and defend the constitution of the United States. Surely as the holiest of holy Christians that they claim to be, they would not violate their oath of office. Secondly, Congress itself would probably slow down any of their more overt actions. So, worst case scenario, if either were to win the Presidency, we would have four years of stale mate. But, as I said, I doubt we need to worry about it.