From what I’ve seen of Glenn Beck, he believes the Bible before the Book of Mormon, and turns to it for answers instead of the Mormon church. I’ve known a lot of people who are married into Mormonism, but get their beliefs from the Bible, even though this is NOT the church’s policy. Mormon leaders openly believe that the Bible has been corrupted. Hence the need for Joseph Smith’s “corrected” version.
I’ve seen that with him also.
I watched his conversion video and he made a comment, though slight, that he was willing to “drink the koolaid” to stay in the faith. I believe he did this because of his alcoholic background. But, I can’t be sure because I don’t know what’s in his heart.