Sorry to hear about your husband's diagnosis. However there is a lot of good information available on possible treatements.
One of the best I've found is a book by Dr. Charles "Snuffy" Myers on "Beating Prostate Cancer: Hormonal Therapy & Diet"? He did an impressive amount of research with the NIH before starting his own practice. He's a prostate cancer survivor himself, and he contends that most "hormone resistant" cancers are not really hormone resistant, they are just responding to other things that are not shut down by Lupron, etc. He recommends a triple blockade of Lupron/Eligard to shutdown testosterone production, casodex to block effects of any residual testosterone and dihydrotesterone (DHT), and Proscar to stop production of DHT. He cites case studies of patients he has treated with widespread metastisis and PSA's on the order of 3500! A couple of these patients now have little or no detectable cancer, so it's worth checking out his web site, http://prostateforum.com, from which you can order his book.
Here's wishing your husband the best of luck with his treatment. Keep us posted on how he's doing!