As a part of a startup that just went under (by "just", I mean literally yesterday) they either can't release the code due to fiduciary responsibility to invest

As a part of a startup that just went under (by "just", I mean literally yesterday) they either can't release the code due to fiduciary responsibility to investors (it could be worth something, particularly if someone decides to dump more money in or the company somehow miraculously recovers) or because of contracts into which they have already entered with investors.