If an equivalent amount is burnt from the dev premine it's basically paying the attacker a bug bounty from dev funds, all other investors are no worse off.
Rollback is thermonuclear option, it can KILL komodo and SuperNET today!
Paying a bounty to a guy who found dangerous bug is well worth it IMO
KMD was headed down the Coinmarketcap list already. This will probably bump it out of the Top 50, but maybe it was inevitable.
Although some of that selling was probably the hacker, dumping coins.