Only 2 attempts left? Just clone the drive and run hashcat against it, I don't see the problem here.
>Thomas has just two attempts left to guess the password before it's encrypted and lost forever.
I suspect they meant the drive would wipe itself after another attempt.
You could attempt to pull the controller chip and decap to extract the secondary key which would allow you unlimited attempts
Although I don't think they have the auto-destruct feature.
But with 200M+ at stake, I'd put out a bounty for someone to reverse engineer the firmware.
Edit: sibling commenter says it's IronKey, reading about it, reverse engineering won't be that trivial...
If it were me, I would easily give up half of it to get the money back.
If nothing else find a university with an election microscope and give some CS students a project of reading the key bits directly.
Enclaves keep out petty thieves, not determined attackers with unlimited physical access. Chapter 1 of cybersecurity is no hardware can protect against that.
It just isn't believable that you can have a storage drive sitting in front of you which contains both encrypted data and the decryption key (or at least the password-encrypted decryption key) and yet not be able to access the data.