The company in question is actually located outside of the US, and so are all employees who have access to the key. It keeps its servers in the US only because of issues with cost and latency, I think.

There are systems you can use to defeat this. One password decrypts the drive, another wipes it.

If there was a court order for the decryption keys for your drive and you gave them a key that destroyed it, you would almost certainly be found guilty of deliberately destroying evidence.

If they could prove that that's what you did.