Then I heard from Peter Chattaway that although it was mentioned in Michael Medved's book "The Golden Turkey Awards" it was suspected of being a hoax. A while later I had a conversation with Michael Pitts and he said that it was one of the films in his book that he hadn't seen. But then, the above poster for the film resurfaced and there was some evidence that the hoax in Medved's book was in fact The Dog of Norway.
Recently I've come across two further pieces in the puzzle. The first was a comment from the other author of "The Bible on Film", Richard Campbell who confirmed that "HIM is a real movie; the hoax film in Medved's book was DOG OF NORWAY ...the photo from the movie is really just a pic of Medved's own dog!" And then today I happened to encounter a blog post from The Screengrab which includes a few snippets from a review of Him in the April 29th 1974 issue of "Screw". Anyone interested in the details of the movie read on, anyone likely to be offended by this, please don't. Oh and that article goes on to talk about the fictional Gay Jesus movie that I blogged about in March, and the snopes.com article which also links the two films.