Hi snowcake,
Much more experienced and insightful people will comment shortly, but I just wanted to write and say don't despair. First of all, I don't think it is possible to spread mets simply by surgery. So, I don't think you should feel like that could have been prevented. My dad's oncologist always says that there is little logic to PCA, those cells can just mutate, and no one can really predict when.
In terms of treatments, I know you've mentioned lupron and radiation. We have read that platinum-based chemo can be effective, but also what about
a genetic analysis (such as Guardant 360) to show if certain mutations exist that can be effectively targeted by Olaparib (a few Phase II trials are taking place evaluating this drug:
/prostatecancerinfolink.net/2017/05/18/the-phase-iii-profound-trial-of-olaparib-in-mcrpc/ Also, what about
starting Zytiga or Xtandi, even if they don't kill off all PCA cells, they could reduce the tumor burden (there are usually a number of different PCA cells in one's body at any given time, not all PCA is going to be neuroendocrine). Trying different therapies could reduce the disease load, and cause an immediate improvement in overall symptoms).
Best,
Arthur