Maybe it's crazy but this and other similar situations of coins being stolen demonstrates the benefit of having a way to reverse transactions.
Perhaps we should consider a mechanism to reverse a transaction through a vote or consensus. Haven't fully thought out how this could work but it is something to consider.
Something could be designed to allow miners to reverse a specific transaction (and all subequest tx's) through majority consensus in extreme situations such as this.
Mistakes and thefts happen. Fiat banks have the ability to correct mistakes and reverse transactions unless the funds are withdrawn for cash.
I dunno...just thinking out loud.
The only issue with reverse transactions, bitcoin would turn into a world like PayPal where people buy items, then immediately try and reverse a transaction.
This can be abused to hell.
The whole point of bitcoin is to be smart, and to be careful who you trust, and never leave coins stockpiled in an exchange.
A offline wallet is always the best wallet.