The recent movie the "Blind Side" showed the "coaching carousel" really well. The coaches played themselves in the movie while recruiting Michael Ohr. I think most of them had changed schools by the time the movie came out.
Also speaking of Dan Shaughnessy- his son played @ Boston College. I saw him on the roster for 2 years but not listed on the 2010 roster. His father wrote a very moving book about his senior year in hs. Loved the book but I wonder if it was tough on his son to have so much exposure?