Ron,
I also read this article by Jim Kepner several weeks ago and was surprised as well. Though I probably have a better knowledge of the early Soviet history than an average American (I am well aware of your research skills, Ron!

), I can not really help with funded information so far.
Generally, in the twentieth of the 20th century the Soviet Union went through a liberal phase, with more individual and economical freedom for its citizens. In Soviet Russia homosexuality was not illegal until 1934, the time when repressions against political opponents and general terror regime was established. In the twenties, the political course was a subject of vivid discussions, and many different economic and social theories were considered by various political groups. I can imagine that the creation of a "gay homeland" was one of such ideas, but I have no informations that it was ever officially discussed. I will watch out in the russian media, maybe I can find something.
Jim Kepner died 1997, but possibly his successor Dr. Walter L. Williams (
walterlw@usc.edu) from the ONE institute can help as well?
http://www.usc.edu/isd/archives/iglr/