For me, LGBT identity is as much or more about identification with a community -- publicly or privately -- than it is about who someone has romantic / sexual / whatever relationships with. Ted Haggard is clearly nowhere near a Kinsey 0, but I do not consider him to be gay or bi in any meaningful way...LGBT is not a clinical description of someone's sexual desires; these are social identities that people earn.

I have to say this attitude puzzles me, and I may be getting the wrong end of the stick (especially since I've never heard of Ted Haggard before). I assume by community you don't just mean the scene, so I'm not sure exactly what you do mean. Are you saying someone like Ted Haggard doesn't count as LGBT because he has tried to become straight? How exactly does one earn the LGBT label?