Ah Christ, I can't believe it's been 3 months since I last posted here. I'll try to be more active, starting in a couple days. Anyway for now, I'll just post a Powers update real quick. AFAIK, he's still pretty convinced that chemical castration (or suppression, if you want to put more mildly) is the way to go. The Patient Zero spoke out on Powers' subreddit recently about his experience:
tl;dr is that he claims a partial recovery. I'm personally a little pessimistic for now. The improvements he describes seem to me to be no better than what you'd get in a temporary upswing. I hope to proven wrong though, and Powers has other patients he's experimenting with at the moment.