lynnie4ever, don't say go away, yet. You and your husband will have more decisions to make.
In my opinion, radiation would have been a better choice even it the cancer hadn't escaped. But now you'll make choices about what type of radiation and where to have the radiation. That's is where this site is rich with experience.
If you haven't yet gotten somatic testing of the biopsy samples, you should request this from the doctor's office. It can take serveral weeks and can provide valuable direction. Decipher is one that most people have reported here. https://decipherbio.com/
Then you'll want several opinions from various oncologists. You can send the records yourself which I recommend (for speed) or have your doctor's office refer you.
Consider Proton radiation. The most experienced guy anywhere is Carl Rossi CA Proton https://www.californiaprotons.com/ He is seriously worth talking to because he is calming, deeply knowlegeable and he won't try to get a committment from you. Plus he does zoom appointments.
You're in a kind of miserable space, but your husband will probably be given androgen deprivation therapy which will slow or stop growth and reduce the size of the tumor probably for two month before treatment. The treatments are painless.
The gentlemen on this site are wonderful and will welcome your questions.