While I know it's not for everyone, I know of a few people with bone mets who are had radiation and then go on sutent. In fact, my family member is doing that. The doctor did tell us with just the sutent, what you expect to see is stability. When you add radiation, you increase the ability to shrink the tumor and/or contain it.
I have written about this before, but there are currently 2 studies in the US of radiation plus sutent. One is being done at Mt. Sinai in New York, and the other is being done at Thomas Jefferson U. in Philadelphia. They previously did similar studies with Nexavar at Duke and I believe University of Pittsburgh, with good results.
My family member is in the Mt. Sinai study. That's stereotactic radiation (like gamma knife) for spine mets + sutent.
Good luck.