I've been studying the phenomenon of "Progressive Christianity" recently, mainly by reading Devid M. Felten and Jeff Proctor-Murphy, Living The Questions. This course has been offered in Brisbane Diocese for a few years now, and there is a small group of clergy who identify with this position.
I will be blogging about this issue for a little while, as I write a critique of this theology. The short answer is that this is not really progressive at all, but essentially a very ancient pantheistic religious mindset parading in the outer garments of Christianity and spruced up with some modern critical scholarship.
Podcast on Jesus the Eternal Son
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