This looked very exciting
Motorola RAZR HD, RAZR M, and Atrix HD Bootloader Unlock Released – Droid Life
But then I read "...this method does not work on OMAP powered phones, including the original RAZR, Bionic, and DROID 4. Do not attempt to use this on any of those phones."
However, it does give some hope for getting an unlocked bootloader.
Motorola RAZR HD, RAZR M, and Atrix HD Bootloader Unlock Released – Droid Life
But then I read "...this method does not work on OMAP powered phones, including the original RAZR, Bionic, and DROID 4. Do not attempt to use this on any of those phones."
However, it does give some hope for getting an unlocked bootloader.