I confess ignorance of the Righter trial... but I will note that it is not unknown for the U.S. Supreme Court to reverse itself. Perhaps LEAC thinks the ground can be retaken.
I found this summary on the web (Louie Crew's site). I guess it wasn't that long ago, just 1996. It held that Christian teachings on sexuality are not part of the "Core Doctrines" of the Church: