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
If you do your research you'll see the Vericoin rollback was simply decided by the Vericoin devs by themselves. Whereas NXT allowed the outcome to be decided via voting with your NXT (seems decentralised to me). And overwhelming the votes are in favour of no rollback, which is being respected.