I am agnostic about what Obama is. However, I suspect he might follow his mothers views like he does in most things. On the other hand he was raised a Muslim as a small child. Heck the sending him back to Hawaii might have in fact been due to the family concern her child was turning away from atheism toward Islam.
What is funny is reading Dim comments on youtube where these videos are posted. They think these people are so so dumb for not believing exactly what some politician says. But of course this is a time what he claims fits what he needs to say to win elections. I would say most people are smartly skeptical about what presidents say and that includes about JFK, LBJ, Nixon, Ford, Carter, Reagan, both Bushes and most of all Clinton and Obama.
Pols sometimes tell the truth when what they believe corresponds with what will help them. Sometimes a pol will tell the truth even when it hurts there election chances though off the top of my head I can not think of any great examples, except GW Bush. Pols often tell us what we want to hear.
Heck, some ministers don’t even tell you the truth about their beliefs. I remember going to my minister after taking a survey of religion course that included Paul Tillich, and asking the minister if he agreed with Tillich. He said yes and I asked him why he preached such a fundamentalist message if he agreed with Tillich. He said that a minister has to preach the kind of message that the congregation wants to hear.