There's a pastor in Decatur, Illinois who's done more to strengthen and rebirth more congregations in the PC(USA) than anyone else I know, and you've probably never heard of him. His name is Jack Pitzer, and in his congregation's newsletter is a prophetic piece of wisdom that illuminates the way forward. Read it, and it will change the way you think about sitting on the fence.
The Church dies when it settles paradoxes that Christ means to be unsettlable-- and there is no greater paradox than the one of a Holy and Righteous God in relationship with sin-filled, sin-defined, sin-confined humanity. There is no easy way to keep these two opposites in the same place at the same time-- someone's going to have to die. To make the way to hold both, Jesus died; to proclaim and live into the way that Jesus opened, we must die-- die to self, die to pride.
In the conflict over homosexual practice, both sides are standing in path of lightning bolts when we settle on a solution of law or love. Law by itself kills, and has no ability to give life; love by itself rots, and fosters the corruption of the soul. Law AND Love practiced together are the narrow way-- rocks can fly from both sides. But life flows from those who walk the narrow way.