Homosexuality, Helminiak, the Bible, and the development of Catholic Legal Theory

Last week Steve Shiffrin blogged on "Person's with 'Homosexual Tendencies' in the Priesthood."  In that post, he discusses an NCR article:  "The article is mainly about Fr. John J. McNeill who wrote The Church and Homosexuality in 1976 in which he rejected Vatican teachings on same sex relations and became something of a celebrity. The article suggests that McNeill's intellectual successor is Daniel Helminiak, a 62-year-old psychotherapist and professor of psychology at the University of West Georgia. Helminiak is  the author What the Bible Really Says About Sexuality.  He is convinced "the old biblical, theological and psychological disputes have now been resolved in favor of gay and lesbian relationships."  He maintains the evidence is “incontrovertible.” [I wish it were that good!]"

On a personal level, I hold Daniel Helminiak in high esteem, but I must confess that I haven't read his book.  What is the basis for his conclusion that "the old biblical, theological and psychological disputes have now been resolved in favor of gay and lesbian relationships"?  On what basis does he conclude that the evidence is "incontrovertible"? 

Thanks, Michael S.