That sounds good to me assuming necessary checkpoints exist, but the post was rather cryptic as to when it actually happened.
and any transactions that happened after would become void as well so there would be butthurts from people who paid btc for theirs today.
it sounds like they have a plan already, and if the team follows through and replaces it... then I'd consider them to be one of the most upstanding exchanges I've seen thus far in crypto and they will have a loyal customer in me.
We are unable to see market volume on both exchanges now that they were locked down. And we do not know what time the attacked actually occurred, yet.
But over the last 18hrs the volume of both exchanges was very small when compared to the total value of ~10,000 TEETH. Rolling back to the attack time itself and recreating actual trades that occurred since then on both chains might only end up being a 5btc loss or less. Will it take some work, sure...but I believe if actually thought over it might actually be the best case scenario. This would not be a full rollback, just rolling back to the tx before the attack and then recreating trade histories of the 2 exchanges which are off chain (I am guessing less than 50 buy/sells total between the exchanges). I am sure I am missing some details that I hope come as responses so that this may be looked at as a viable option.
EDIT: Until then, if anyone has the availability to throw together an explorer or some pull with one of the major explorer sites now would be the time to ask for a pro bono explorer.
EDIT 2: From how I am looking at it, with the above proposed rollback, the only thing lost would be btc and it would be limited to how much the thief dumped on the 2 markets combined.