It wasn't a separate block chain, just a smart contract running on Ethereum. And it was an experiment the creator advertised at the start as crazy and untested.

It wasn't a separate block chain, just a smart contract running on Ethereum. And it was an experiment the creator advertised at the start as crazy and untested... So the odds of walking the Ethereum chain back are about like a penny stock convincing the NYSE and all traders in world to walk back all their trades for the last two days.