Great photo. It could easily be a free, silent, no maintenance, unseen guard dog that could show itself in a nasty way at any point. To a nonbeekeeper it's kinda like a Bogey man. It's a magnet to a beekeeper though. If there is a hive, even if it collapses the smells will probably bring in another one the next spring, thus continuing the guarding of the derelict church.