This hasn't come up before, IIRC, sounds like you have an "endless loop" string on. That means for the strand that broke, one on the back side is worthless also. I've never had to deal w/ this, so this is my OPINION. You should be ok unless more strands let go, keep an eye on it! One strand failing puts a little more strain on the rest, but Dnk is our resident string expert, maybe he has better advice.