The truth is that the law as it now stands does not allow Don Henley of the Eagles to force this man to surrender the domain. If he sued, he would lose. The threats Henley's lawyer put in his "Cease and Desist" letter to the non-famous Donald Henley are groundless because the statutes he cites do not pertain to this kind of scenario. The man was not attempting to impersonate Don Henley; the man is
named Don Henley. Plus, his site is not a commercial one so it isn't subject to laws governing businesses.
The site was called "Don Henley's Home Page" and was of an evangelical nature. It included a disclaimer that he was not Don Henley the musician. However, the site had a page set aside to detail what occurred with this dispute, including his correspondence with Don Henley's lawyer. Using a web archive, you can still view this page
here.
That's all I know about it.