I am totally on board with GLBT rights, but I also think that scuttling the best hope for progress for the cause over a douchebag religious leader (who is getting plenty of pushback from his hateful followers, too) is undoing our own hopes for momentum.
IOW, I *get* it that Warren is wrong and a jerk on this topic (women's rights, too, incidentally!), but I also believe there's a long road ahead to make American society blossom into understanding and acceptance, and trying to sabotage this first step of electing someone who, whether we like every move he makes or not, is genuinely on board for major evolution of our society, is just going to make us lose credibility. I would be much, much happer were Warren not there, and I wrote Obama a letter of protest, but I won't boycott or undermine Obama over it. Not this early on. 
Oh, and on the much-blogged-about topic of the "wasteful inaugural events"?
I am happy with the inaugural festivites, in general, because most of it has been paid for by donations (and I'm a donor), and also because even in bad times such as these, I feel there is merit to *ceremony* to mark events and inspire people. Millions of people are participating in today's Day of Service. Millions of people are inspired by witnessing these events, and through that inspiration they are changing their personal lives, and making a difference. I believe that this inspiration, fostered by these events and encouraged by the general momentum of the people, is the way forward. I don't believe that generating such momentum is a waste of time or money. Of course, only time will tell if my assessment holds any value, but I can honestly share my own experience, which is what I am describing, and what I have observed amongst many of my friends. I am becoming free of my paralyzing, cynical Bush-conferred depression, and many others are as well.