That's not really an answer. Besides that, I found two of what I regard as errors in the article.
The Article has said that no divorce documents were produced. (Dunham v Obama Divorce, 1964) That is not true.
The Article also said Stanley Ann left the baby behind with her mother in 1961 when she moved to Seattle to attend Washington University. That is also not true. Her friend at the time (Susan Blake, I think) said she personally changed Barry's diapers herself, and that Ann seemingly didn't know how.
These are SERIOUS errors. They are the sort of errors that makes me feel as though someone hasn't done enough research to know what they are talking about, and therefore should be suspected regarding other things they may allege.
Couple that with the fact that Malcolm X was from New York, and had likewise sworn a vow of Celibacy (He was taking the Islam thing pretty seriously) and it makes it even more unlikely that he showed up in Seattle Long enough to have sex with Stanley Dunham.
Frank Davis is by far the more likely suspect if Obama Sr is not in fact the father. Ann used to go over to his house alone and listen to records, and Davis had a penchant for young white girls.