Who would make a “mistake” like that? No one.
Can you imagine talking about your faith and suddenly let slip from your lips “My Rastafarian faith” or “my Hindu faith?”
Nobody, I repeat, nobody, would make such a mistake.
One can only conclude Obama really is a muslim.
I have never uttered the phrase “my Muslim faith” in my life and as you say it just does not pop into anyone’s head to say “my Buddhist faith” or “my Hindu faith” or insert any other religion ...... I’m not sure this is the kind of blooper that can be explained away.