Unless the deer are just all out totally spooked, they MIGHT stay away for a few days, but I think they will soon get back to their normal schedule. As for the bucks, you may get another big one to come in, b/c he wasn't there when it happend so....to answer you question, a week at the most, but I don't think it will be very long if they wern't spooked too bad.
Tell me and I forget. Show me and I remember. Involve me and I understand.