Welcome, @waynebarry. I moved your question to the Prostate Cancer support group here https://connect.mayoclinic.org/group/prostate-cancer/ as @dandl48 suggested. I hope you saw the responses from @nicholas7 @hbp as well.

You are most definitely not alone. Members have talked about recurrence years after the original diagnosis and making treatment choices.
See the complete list of related discussions here: https://connect.mayoclinic.org/group/prostate-cancer/?search=recurrence&index=discussions

Did your cancer team talk about options with androgen deprivation therapy (ADT)? What treatment did you have 10 years ago?