And you should seriously worry and question the team for not finding this sooner or knowing about it and not doing anything. The investors should demand answers as to how this happened and why it was allowed to happen for so long.
A rollback of the Blockchain will destroy an credibility this coin had. Why would one invest in a coin that the team can just roll back the Blockchain and take their coins away. Since this is said to be a decentralized coin, was a consensus taken as the best way to proceed?