Use this program,
http://forum.ppcgeeks.com/showthread.php?t=9229
You're stuck in something called Bootloader and need to force the phone to kick yourself out of it. If that doesn't work you can try to reflash the original Verizon ROM.
http://forum.ppcgeeks.com/showthread.php?t=21161
Don't worry about the Mogul, it's almost impossible to brick via software methods. Flash whatever you want to it and if it messes up just revert back to original and restart from there.