Aside from that, the Pledge was part of a larger program written by Francis Bellamy, and the larger program included hymns, bible references, preaching, et cetera, as well as including the phrase "under God." For crying out loud, Francis Bellamy was a Christian socialist and a religious wako. He was not a friend of atheism. That "under God" was not in a specific part of the Pledge of Allegiance program was practically an oversight. The only reason Bellamy MIGHT have opposed the addition is that he did not want other people altering his pledge and messing up the flow. That is ALL.
see the photo at http://rexcurry.net/bellamy_salute_1915_rex_curry2.jpg