I'm more inclined to agree that there are some anxious kids somewhere in the village, but it is possible there was some MOW equipment tied down there that was moved earlier in the day. Its all speculation at this point. Also, unless SST knows that the ties were recently put there... Ties have been known to sit for months before being installed, it's not always an immediate thing.
This stub was the only connected switch left between CP GRAVITY and the north end of the passing siding at CP WALES (MP 22). All others have been removed, including the spur into Steuben Foods and the Team Track near Pound Rd, so it makes sense that they'd keep one intact for MOW tie-down and bad car setouts. This particular siding used to be connected at both ends with a stub to the north and spur into the Fisher-Price plant, but was stub ended to the Main St bridge between 2011 and 2014.
I brought up the question about the relay box at the switch above because, were the signal system still in service, there was a set of Auto signals a little over a mile south, would these have indicated the open switch in advance? (I don't know a lot about PRR signal aspects, so I don't know if they would even be capable of doing so)
PS, I know it's likely with the signal system out of service that CP WALES, it's counterpart at the siding's south end CP PERRY, and even CP MACHIAS are probably no longer considered control points, but they make convenient naming points from the track charts. I'm not even sure if GRAVITY is still considered a CP or just a "station" in the sense of a location along the line.