Hormone shots? Never heard of it. If is non-invasive bladder cancer, then there is BCG treatment or Mitomycin-C directly instilled into the bladder. If the cancer has invaded the muscle of the bladder, then it is typically removed.
If it cancer that has spread to his bladder, then that's a different thing altogether. That would most likely require chemotherapy.
I think before picking a treatment option, he should get a second opinion at a major cancer center. If it's bladder cancer, then go to one that specializes in that. If it's prostate cancer or testicular cancer that spread, the go to one that specializes in the particular type of cancer. Cancers are different and different treatment protocols are called for depending on all of the circumstances.