It's interesting that this thread started in 2005 and is still going on.
The Sexuality Task Force has finished its Social Statement which will be presented to the Churchwide Assembly this August. As I understand their work, they are recommending a local option. If the recommendations are adopted, individual congregations will be able call ordained pastors living in committed same sex relationships. I think that synods may also have some say in the matter.
It has never been the polity or practice of the ELCA to force a pastor on a congregation. (Realistically, I think bishops sometimes exert a bit of influence, but...) under these recommendations, no congregation will have to call an openly gay pastor.
However, if the recommendations are adopted the ELCA will be a church body that ordains gay pastors in committed same-sex relationships. Individuals and congregations may need to ask themselves if they want to be part of such a larger body.