By Daniel Chavkin The incident occurred as the Spartans head coach was walking off the field after Saturday’s game at Michigan. There was no shortage of controversy following Michigan’s 29-7 win over Michigan State on Saturday, because of an altercation between a group of Michigan State players and one Michigan player in the tunnel on the way to the locker rooms. Additionally, a separate incident between Michigan State head coach Mel Tucker and a fan took place on the way into the tunnel. As Tucker was walking off the field and into the locker room with his team, a fan appeared to reach down a…