Strangely enough, I can actually see the courts steadily going in that direction in the future, but considering the rhetoric coming out of WTHQ reiterating all their ultra-conservative stances, they seem far more inclined to draw lines in the sand than compromise, these days.
Which, IMO, is good, in that it ensures their decline.
I tend to agree, what I really see happening if some country begins sanctioning religions that ban homosexuals from joining is this:
1. Fight it to the highest court in the land.
2. Upon losing, issue a public statement that they do not ban homosexuals from joining nor do they excommunicate them for being homosexual.
3. Issue a private letter to the elders (not to be read nor disseminated publicly in any way) that anyone who participates in homosexual behavior (not mearly being a homosexual) has disassociated themselves by their actions.
4. Stop talking about homosexuals as openly in the publications, but continue to make it a topic for CO talks and at conventions.
With any luck the reputation their earning themselves in the legal world will make it obvious what they're doing and expose them.