Tennessee got a 25-15 win over Oklahoma in Norman tonight, but it wasn’t the high-flying, offensive high-wire act we’ve come to expect from Josh Heupel’s troops. Nope, this was a defensive thrashing the likes of which the Vols haven’t put on a quality opponent in years. Oklahoma had benched starting quarterback Jackson Arnold before halftime following his 7-of-16 effort that including an interception, a lost fumble and a backwards lateral that Tennessee recovered. The Sooners managed just 36 yards rushing on the night and didn’t find the end zone until back-up quarterback Michael Hawkins direc…