My understanding is that it is not the ethereum virtual machine that is flawed but rather that there was a flaw specifically in the DAO code itself. Insom will be more in the loop on this, although she may be on five whiskeys and a beta blocker by now ;) The exploit of the DAO code allowed the attacker to leach eth out of the DAO. This is no different from an attacker exploiting code poorly written in C. The language is not broken but its use was. Eth's drop was a market response. If you don't own DAO tokens you have nothing at risk save the choppy price of eth as a result of the market reaction. The tricky part now is whether this exploit justifies a hard fork of the blockchain, and if it does what precedent that sets in the community. How small an event like this justifies another rollback? And if a rollback is justified, what does that say about the distributed nature of this blockchain and who really controls it?