Offer someone 10% of the $200 million to find a zero day for it. That creepy Israeli company makes cracks for secure enclaves for lower prices than that, and for much newer security hardware.

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.