prophetic metaphor/alternative worship

As I've mentioned before, I'm currently participating in a small online group of a few folks considering the future of the church and the internet. In our small group of 14, we are taking turns in the "hot seat." When you're in the "hot seat" you first field all questions from the rest of the group, and then you're given the opportunity to ask any question you wish of the rest of the group. Author Tom Hohstadt is currently in the "hot seat" and is leading us thru a discussion of what he calls prophetic metaphor. As we've been interacting over his vision of the term, I've realized that one could consider the alternative worship movement as an expression of prophetic metaphor. Tom has an article on prophetic metaphor that explains what he means by the term.