If it is only reason and experience that calls to question the voice of Scripture on any subject, then how can it not be "beyond consideration"?
Except there are those who think the Scriptural commands against homosexuality were actually against heterosexually inclined persons engaging in homosexual acts for whatever reason (idolatry, drunken debauchery, to humiliate the "passive" person in the act, etc.)
Simple reason is not the only thing that makes this "beyond consideration". It is important to note that "beyond consideration" and "it should pass" are two completely different things. At one time, I am sure that "reason trumping Scripture" was the critic's claim of those who sought to allow women's ordination to the pastorate. It was not. For some, it MAY be the reason on this current issue of homosexuality, but for others, it is not, but rather, reason coupled with what they believe to be truer readings of Scripture than previous interpretations have allowed for.
So no, it should not be beyond consideration. But that does not mean that I believe it absolutely should pass, this new social statement.
The Lutheran stance against outright enthusiasim has always been a potent one - until now. As you suggest, if pure unbridled enthusiasm is not outside the pale of the church, anything is indeed possible, except a church that follows the compass of Scripture and its confessions. That seems to being jettisoned out of the picture as you speak.
First of all, please define for me outright enthusiasm. Not sure if that means "reason and emotion only doctrine" or "enthusiastic about the Gospel" or what. Secondly, while I will say that Scripture seems to condemn homosexual sex (especially male), I can see the room for it not being all about just the sex, or even about the sex at all (talking about not worshipping Molech by killing your children immediately before talking about homosexual sex would indicate a train of thought pertaining to idolatry rather than sheer morality of sexual behavior regardless of other religious factors, for example), I've not come across the section of the Confessions that condemn homosexuality.
Remember, Lutheranism was not started by merely accepting the status quo. Challenges were made. Challenges that we, today, see as being right, but at the time, were indeed scandalous and "jettisoning" the whole of Scripture in the minds of many. We can never simply close our eyes and pretend that we will never come to a crossroads like that again. Only by keeping them open and our attention focused, and having a willingness to confront any issue based on all merits of Scripture and reason and experience and tradition, can we truly ever move forward... even if we move forward to the point where we've already been.