How to COMPLETELY reset TP (CDMA)

Hi:
I flashed my Sprint TP to MightyROM with Alltel settings. Worked Great. Now I'm going back to Sprint, but I can't get the NAM and Data settings to reset to Sprint defaults. My old Alltel number sticks, along with the Alltel data settings, even after flashing to Sprint firmware. Is there anyway to get it to completely and totally wipe everything out, or will I have to manually edit it in ePST?

Thanks!