Why did he do it?

I have just read a page on( The creation of Anne Boleyn ) site . The article asks ,historians , authors , writers and others why did Henry VIII let her go ? I stopped reading after Michael Hirst’s explanation of the events . Michael Hirst’s views were thought provoking . I have wondered for years if an acceptable and strong reason would ever come to light. His plausible account is cemented with me.