The SMU Mustangs unloaded on the TCU Horned Frogs with a beatdown of historic levels, winning 66-42. For head coach Rhett Lashlee, it was a long time coming to get his first power conference win. It came after a tough two weeks emotionally on the Mustangs. Lashlee made the call to go to quarterback Kevin Jennings as his starter. Jennings responded with scoring drives on SMU’s first six offensive drives. Meanwhile, it was defensive touchdowns by Brandon Crossley and Ahmaad Moses plus a punt return for a touchdown from Roderick Daniels, Jr. that set Ford Stadium on fire. For Lashlee, this is THE…