I don't think this counts as takesies backsies. This incident clearly followed the code is law principle, the whole point is that a majority forms the chain of truth. In this case, a majority decided to splinter and use a different chain where the incident never occurred.

As far as I understand blockchain, that is the system working as intended. Some nodes choose to run Ethereum Classic and some choose to run Ethereum. Isn't that the whole point? Decentralisation?