How to un-mate my Diablosport predator?! Goin back to SCT Tuner Saturday!

How to un-mate my Diablosport predator?! Goin back to SCT Tuner Saturday! Right now my car is running the Vortech provided tune via Diablo sport predator. Brenspeed is using my SCT 3015 to tune my car, So how do I un-mate my Diablo tuner? Is there a selection in the menu for “return to stock”?? Once I un-mate it I can just go back to using my SCT like I used to w/ the Brenspeed tune right?! (I HOPE…)
 
Sure will. I had bought a used diablo off a local seller. He thought he turned back to stock but he chose the wrong setting. Diablo informed he needed to select original back-up. I met up with person again, he loaded original back-up in his car and that unlocked the tuner and turned his car back to stock.