Food for thought. If they were in left traffic for 23 and overshot the localizer to the west of course, or anytime in right traffic, the glide slope is unusable beyond 5 degrees west of the localizer, due to terrain out there. (its on the BUF Jepp chart comments) You get some false glide slope indications. At best you are ready for it and wait patiently to get within 5 degrees, at worst it is confusing, distracting, and if you take the bait on the false glide slope, could cause problems. If I remember correctly, in that zone of "confusion" outside 5 degrees, the instruments will show you high on the glide slope.