Bittrex locked out all legacy accounts by modifying their state to 'new' without notifying the users they will do so.
Not sure how they will handle it but to come back from this fiasco they would need to put all new accounts as 'basic' to let people withdraw their money, otherwise this will end in court.
This is actually correct. Since they are based in USA, they are reachable for sure and that will most likely be the end of their exchange if they don't notify people and let them take their money.
I believe that doing this would be crime also in USA, and could end on huge fines and possible prison time. It's sad to see big exchanges like bittrex that used to be good, to turn this way and peeing on the eye of their customers.
Oh well, gladly we have already decentralized exchanges which most likely will become a standard.