Motorola Defy getting stuck at boot menu
I managed to unbrick my phone eventually.

Tried to use RSD Lite with several images, but it would give an error and then the application would crash and leave my bootloader corrupt. I tried all the schemes I could find including: loading the image from root of C:, disabling UAC, etc., but nothing worked.

Then I tried sbf_flash on Linux with the same image, and it worked like a charm, no errors, and my phone was up and running again.

So for anyone else who may encounter this problem, I warmly recommend using sbf_flash, it is incredibly simple to use.