You are very welcome. And happy to share the “no, but” answer!
Let’s think about the scope. Are we looking for a fix for one project that can be thought about and replicated else where? Are we looking for a committee to write some wrongs and bring a human touch—but in a singleton organization?
Depending on the details… Perhaps you are just looking for a way to recognize onchain the people affected by this locking. Is there a list of them? Does that need to be generated off-chain? Can it be validated on-chain, for example by using the state root (globally or for a specific address?) and then anybody can provide Merkle inclusion proofs against that root?
Best case is that yes this is all possible. Then what you can do is allow people to mint a new RETH (recovered-eth) token. Probably ERC-1155. Use DeFi to add liquidity with other pairs. You could cap the upper bound of the price at 1 RETH = 1 ETH. And then use these tokens like any other token. You could bid with them to buy NFTs. And people could accept those bids. You would need to convince people that they are valuable. You may or may not achieve this by convincing people to never accept less than 1 ETH worth of value for their 1 RETH.
And if all that worked, you would have a full economic recovery for all the affected people, participating in a community of other people that also support this proposal and do business with you.