Nope, this cannot be done with these Toughbooks - there are fuses in a surface-mount package that are programmed with the secret key and the BIOS cannot be reset with 'traditional' remove-the-battery hacks - these fuses either have to be read out, or the package needs to be replaced.

Its a huge hassle and a dire waste of hardware to have this occur and I personally do not look forward to a future where the whims of a despotic software company dictate what we can do with our possessions. Oh, wait ..