Bitcoin has forked two times, significantly. One was in 2010 when someone was able to mint billions of Bitcoins. They had to go back 100 transactions and reset the chain. Thankfully, the network was really small then, and all
Well you see Bitcoin had to fork there, as that hack exploited a flaw in the protocol. VeriCoin on the other hand had no need to fork as there was no flaw in the underlying protocol, this hack on MintPal was simply a theft.
What you and many others fail to understand, (or more believably use as excuse to FUD) is the fact that not rolling back would exactly lead to the situation in where protocol would be exploited.
Therefore same situation.
Eth.