Does billet have their prototype back?

No.

The wording doesn’t matter. Call it an auction, sale, donation, grand theft, whatever you want. But that the end of the day, a small company now no longer has access to their expensive prototype. That’s very damaging to them as a business, let alone the damage that LTT caused to Billet’s image by their haphazard review process. Billet has every right to sue for damages over this, and I personally think they should.