too many factors needed to make a decision like that (are you new or are they new to the table, has there been a standard preflop raise amongst players, has this player ever shoved their entire stack preflop with an unopened pot, etc.). at the end of the day i probably repop to 975 and hope that the player folds or simply calls and then have to play from there, if they go back over the top I would have to take another look at the blind structures to make certain that if I did fold I wouldnt get blinded off within the next 15-30 min if I were to get a cold deck