The single tunnel at Michigan Stadium has been an issue a few times over the years, but never more so after the Wolverines’ win over Michigan State. A fight broke out in the tunnel when several MSU players attacked their opponents. An investigation by the University of Michigan Police Department followed, and now charges have been submitted to the Washtenaw County Prosecutor’s Office for review. “At the conclusion of that investigation, UMDPSS submitted to the Prosecutor’s Office a request for criminal charges against several individuals – all student-athletes on the Michigan State football team,” the statement said. “After reviewing the…