I've had this happen to me before with a Quad tuner. Fortunately for me I had a Predator with a stock calibration stored to load the ECM.
Anyone with EFI or a dealer with a stock map for your year can help you out. PPE could probably load you a stock map if you have the time to wait and send back your programmer. Not sure of their capabilities to do by e-mail and a USB cable.
You will have to find a dealer that will work with you as many question may be asked as to why you lost it. The ECM will have to be brought to your dealer if that is your only option. A dealer with a bench loader also,not all have them I found out.