Welcome, John, to HW, sorry you have a need to be here.
You got to remember, then when your surgeon did the surgery, he wasnt' following a dotted line or the ability to see where cancer cells were located. Even with a wide margin surgery on one or both sides, its possible and not even uncommon to have one or more positive margins. And even with a positive margin, its doesn't ever mean for sure you will have recurrance, often the remaining cancer cells at the cut so to speak, die off and don't cause a problem.
I had one positive margin, and unfortunatley had recurrance within 9 months, then went on to salvage radiation, and that has since failed to. Certainly doesn't mean it will happen to you.
If you post a signature here, it will be easier for the rest of the gang to know what you are dealing with in your particular case.
Good luck, and the real test, will be when you start getting your post surgical PSA tests.
David in sc