The Dattoli Center uses a psa <.3 to classify a cure, although some patients have had a stable psa of up to 4 without any futher increases or any sign of PC through biopsies.
You may see a small rise in psa from it's nadir (lowest point) but it should stabalize or decrease within a few months. Any three consecutive increases in psa reflect a reoccurrance. As long as your psa is low and stable it is very good news. Dattoli published results that show there is only a 1% reoccurrrance rate after 5 years, so you are pretty much there with only a very small chance for a reoccurrance. This is nothing but good news for you, Corman.
65 years old, rising psa for 10 years from 4 to 40; 12 biopsies and MRIS all negative. Oct 2009 DXed with G6 <5%. Color Doppler biopsy found 2.5 cm G4+3. Combidex clear. Seeds and IMRT, no side affects and psa .1 at 1.5 years.