Hey hedgie, link to article
Here's a good annotated analysis of Alpha course homophobia, so you can check the facts for yourself.
"we have many openly gay people in the congregation"
I understand what you're saying here, but I'm afraid that actually doesn't mean there's no homophobia in your church. Believe it or not, gay people are just as capable of homophobia as straight people. In much the same way that women can be misogynists. Think about it, I'll bet you have met some female misogynists.
In my experience the very worst homophobes are LGBTQ people who have yet to come out to themselves. Repression'll do that to a person. Not saying that's the case for the gay people in your congregation, they may very well be perfectly at peace with their sexuality, but I am saying that it's possible your church could be supporting a homophobic course and have gay parishoners.
Quite apart from anything else, I'm pretty sure that most of the gay people at your church have no idea about the homophobic content of Alpha course, you clearly didn't, and would be horrified to read about it.
I used to know a Catholic lesbian who was campaigning for the right to be a priest. Can't exactly call the Catholics friends of the LGBTQ community, now can you? Like many religious people, she ignored what she didn't like and took what worked for her.
I know Alpha course is meant to be a fluffy and modern intro into Christianity, and I know it's been very sucessful at putting bums on pews, but I really object to the homophobia.
It's not mild, not just an extension of "no sex outwith marriage" (which is a bit of a pisser if you're gay cos the church wont marry you, so no sex then!), it implies that lesbians are gay because they were abused (if that's all it takes then why aren't there a lot more lesbians?), it also trots out the old (proven to be false) chestnut that homosexuality is the result of reversed parental gender roles, and all manner of other offensive bull.