Bter should be responsible enough for what has happened. They're the one who should pay the price from a successful hack, not their loyal users.
Any community willing to compromise rolling back transactions that happened since a supposed fuck up or hack of a exchange using NXT is not a community that is honest as it is putting one business' fuck up before people's honest transactions.
That should be made very clear of the implications of the rollback.
The fork is not happening, but the devs clearly underlined the fact that the transactions made after the hack will still be recomputed and validated by the network. There would have been no loss, except for the hacker's.
Most forgers are for irreversability of transactions, which is one of the main ideas of crypto currencies.
This could appear to be the case, but even if it were true, there's no reason for that not to change. This is also because the issue is often presented as a false dilemma. I'm sure people learn more on the nature and mechanisms of the blockchain and what forking it really means will calm the usual agitation around the issue and sharpen the debate around what's really at stake.