Can an Autul scanner completely wipe an ECU?

So here is my issue: I brought my vehicle to the dealership to have it repaired under warranty after it had some major engine issues. I have the car towed to the dealership and have them inspect it. I get a call shortly after stating that all the diagnostic information on the vehicle has been wiped and they having seen my cheap obd2 scanner in the door pocket of the vehicle claim I had used it to reset the ECU and remove all data of me " damaging the vehicle " so that I was not held liable. I never even had the scanner hooked to the vehicle much less changed anything at all as the car never had any check engine lights that came on. So my question is as follows: is there any possible way that a basic automotive obd2 scan tool can completely reset an ECU as they claim I have done with it? Not clearing a check engine light but completely wiping all data held on the computer. Thank you.