So, once the recipient gets the classic message, they can instantly set their local system to the same state as was measured by the sender's system? Can this b

So, once the recipient gets the classic message, they can instantly set their local system to the same state as was measured by the sender's system? Can this be used to 'pause' a system, by delaying the transmission of the classic message? Or do you get the state the original system would have had, had you not measured it?