For decentralized consensus to steal funds, wherever the funds ended up would be liable, if they sent to null that would be a very weird spot and you'd probably be fucked there.
Interesting as all hell. I have no idea what the result would be if it all got nulled. Guess it would partly be up to you too if that happened.
There is many choices available to seek legal recourse and/or pecuniary relief but see it flourish in the near future for all matters involving blockchain.
The only reason decentralized consensus is "wild wild west" is that there is no one to sue.
I can see a future where a specific decentralized environment and every beneficiary or participant of it is held proportionately liable to pay damages/ penalties for any civil or criminal case won in a court of law.
The defendant named would be that specific decentralized environment, as if the road upon which a car crash occurred was named as a defendant party to the plaintiff's loss!
If it does ever get attempted, then that's when the really spicy times begin. the mind boggles!