This seems pretty simple to me.
Decentralized crypto-currencies are all about consensus.
Vitalik suggested a hard fork rollback.
The majority seem to want it...that's consensus!
Now roll it back.
Note - I was not affected by this DAO/ETH situation.
You go into the casino and win legally 50 Million with a new technique.
Not the true story, true story:
A crew of people invest 150 Million into a new casino with all new technique, someone finds a flaw in the code and cheats out 50 Million of the casino...
What to do ? Of course roll back, fix the code, and "restart" the new technique casino...