Seriously, even with the most unrestricted and limber of mental acrobatics, using a trampoline of Moral Relativism, how can you read the Bible and see support for this anywhere?
If they want to participate in this sort of un-Biblical behavior, why do so under the banner of Christianity? Why not just set up a new New Age religion based on Human Secularism?
(I know that part of their goal is to destroy Christianity from within, so that is a rhetorical question.)
The people supporting this stance, need to read Jesus’s rebukes of the 7 churches in Revelation. The Church of Philadelphia being the only church to not receive a rebuke.
Churches promoting gay and lesbian clergy are skating on thin ice.