[DEV] [ICS] "Encryption Unsuccesful" solution
After about 2 weeks of screwing around with my phone, giving up and switching back to my old eris, and thinking it was just hosed, I finally found a solution for anyone with the "Encryption Unsuccesful" message in ICS. You must perform the HTC bootloader unlock via htcdev.net. After you do this, you may
./fastboot erase cache
./fastboot erase userdata
(or in my case, select "clear storage" in the main bootloader menu)
which will restore your phone to a usable condition.