Dave, I'm sorry to read that. A couple of things that I might want to throw out there:
According to Catalona: "Over a 20-year period, Dr. Catalona performed 3,478 RPs on prostate cancer patients. Of these, 631 (18%) had evidence of cancer progression after surgery. Of those who progressed, salvage radiation therapy (median dose 63Gy) was given to 307 patients.
For those who recurred, the median time from RP to PSA-recurrence was 23 months. There were 162 (73%) responders to radiation therapy. A response is defined as PSA less than 0.3 ng/ml after therapy.
A Gleason score of 8-10 was more common in non-responders. The median PSA at the start of radiation was higher in non-responders. The presence of seminal vesicle invasion or lymph node involvement implied a much worse outcome following radiation.
Men with a PSA less than 1.3 ng/ml at the start of radiation therapy had a significantly better outcome.
The study showed that while initial response to salvage radiation therapy to the bed of the prostate after recurrence was good (73%), a durable response out to 10 years was only maintained in 25% of patients. However, men who had an initial response to the radiation had a 35% rate of non-progression at 10 years. "
One other thing to perhaps consider (with reference to your blockage problem) is proton therapy for salvage. It could have less collateral damage than photon alone (I believe with proton treatment in salvage cases it's administered basically as a mixture of proton and photon).
Again, sorry to hear the bump in the PSA.