There will be lots of treatments to try. Even if it has spread, they will give him other hormone treatments. Many men are still around 5, 10 or more years after being diagnosed with an incurable prostate cancer. You may be worrying that the broken hip is linked to the cancer diagnosis, which it might be, but the doctors would probably have seen any spread to his hip or pelvis when they fitted the plate. Things will be clearer when you get the scan results.
The tamsulosin is just to relax his bladder and help him to wee. The bicalutimide is disguising his testosterone so that the cancer can't find it to feed on.