The prototype probably still exists
From The Lost Media Wiki
So, the team showed off this footage: https://youtu.be/ACmAgULSjU8 It is of an early class trial, but dont be fooled: it is not distrust. This is definitely a seperate build early development of the finalized variant of the game, but the interesting thing to me is that they still had it to show off. This means, to me at least, that there is a decent chance they could still have the distrust version archived somewhere, if only because this establishes a history of keeping old builds of their game.