Now we will see if NXT is decentralized or not 
rollback = centralized
rollback = centralized
This ^.
I think it is so funny how coins like Vericoin and now NXT tout themselves as a "DECENTRALIZED" currency. But when a large hack occurs ... "oops can we just roll back the chain this one time?"
lol
That actually confirms the decentralised nature of it. Nobody in particular can choose to roll back, that has to be reached through a democratic decision built through a decentralised consensus. It's the very definition of decentralisation. What you are talking about is Laissez-Faire politics, where you just don't care about stopping the thief.