Tim,
I can't say this is a surprise. With every case of someone being DFd or DAd that I have ever known of, the rumor mill goes crazy. I've heard all kinds of things, from satanism to starting a new religion, to being gay or involved in adultery to winning a huge amount of money at a casino and refusing to give the money back (gambling and greed)...being materialistic, being too prideful, thinking oneself too smart or high and mighty, etc.
It doesn't take much for someone with at least two or three neuronal synpatic connections to figure out that these rumors don't add up given the person or situation. How in the world does it make sense that someone is being disfellowshipped for being gay when the wife was also disfellowshipped at the same time (because her husband is gay? WTH).
I'm guessing you are right that the rumor about you being gay is tied to your gay friends on FB. Who in their right mind thinks having gay friends means someone is gay?
I think though that the idea that having a reputation as a family man being incompatible with being gay isn't necessarily accurate. I'm gay (*gasp*), and I have children...a young family. My youngest is almost a year and a half now. My entire focus is my family. I also happen to be gay. But I'm a...Gay Family Guy. There is such a thing, you know.
Keep the courage!
-LV