Pain management is VERY important for all the reasons listed above. Is there one persone on his care team, Medical Onco, Radiation Onco or surgeon, who might be better understanding his needs? I found that my General Practitioner was also a good person to go speak to about pain management when there were issues similar to yours. Sometimes just going to see your family doc, who you probably have a better relationship withi anyways, and then explain the situation to them. Also discuss the end of his need for them as well to make sure that he doesn't have to face withdrawal issues like so many of us have. If they are a part of the plan and know there is also an exit strategy, they are much more helpful.

Hope that helps,
Erik B