Hi Ulsterman
I've been following your story quietly from the sidelines - I was also diagnosed in Nov 16 with Gleason 9 T3a... And it seems I'm in a very similar boat to you with undetectable PSA. Well, at least I was with my last one, I keep forgetting to get the December one!
So yay for both of us! We both seem to have lasting side effects from the treatment, different but equally unwelcome. Chance seems to have given us a life to live with them though, and I'll take that. Onwards...