Right, because guys can't decide they want to do something other than pro football? Sure glad that Nile Kinnick guy ditched politics for pro football......oh wait, he didn't.
Strange retort.
All I can find through google searches are articles mentioning him getting cut. Can't find anything noting that Hinkel was later resigned to a practice squad and then retired/quit. Again, not saying it didn't happen, just seems very strange that a guy like Ed Hinkel quit an NFL team before his rookie year.
Scout.com: Around the NFL: Roster Cuts & Transactions