Ok, I have somehow managed to soft brick my device as a result of a deviation from this guide. I can't get to the home screen of your stock ICS backup at the moment and a relock of the bootloader leads to the device always booting to the bootloader and a message that reads:
*** Security Warning ***
I did also go back to S-ON in the process (not exactly in the guide)
*** Security Warning ***
I did also go back to S-ON in the process (not exactly in the guide)