Hey BB,
Okay the second doctor is referring to the same treatment my father is getting now at Sloan, he did 2 months of hormones before starting the radiation. The Rad-Onc also gave the same reasoning as the second doctor told you, that the hormones will make the radiation more effective. It will break down the cancer cells and make them more vulnerable to the radiation. I think it sounds logical. I also know from reading Dana Jennings' blogs (the editor from the NY Times) he also did combination therapy.
Hope this helps!
Lynne