I checked out the 2007 edition of Dr. Patrick Walsh's Guide to Surviving Prostate Cancer, co-written with Janet Farrar Worthington. This is an excellent, very accessible text and I highly recommend it. My only quibble is that while Walsh revised the section on salvage radiation to include a statement by Danny Song of Johns Hopkins:"Even men with Gleason 8-10 disease, if they had positive margins, a longer PSA doubling time, and received early salvage radiation, were able to attain four-year control rates of 81%," Walsh still ends the chapter with a large, bolded box that says if you have ANY of these things--Gleason 8 or higher, positive seminal vesicles/lymph nodes, PSA recurrence within a year--you're not likely to benefit from radiation! Not only does Walsh contradict Song's statement, but he ignores some landmark 2004 and later research by Andrew Stephenson that shows even if you have a high risk factor like a high Gleason OR fast PSA doubling time, it is very likely you will benefit from radiation as long as it is started before your PSA gets too high.
I'll get blood drawn in the next week or two for my 9 month post-salvage PSA test. I'll go see the doc in early January.