Edit: The whole thing has an air of the Gnostic, legends of porcine craftsmen constructing dwellings, and of the lairs of fallen men who serve ancient and malevolent powers they fear but don't understand. It's a tendency in public art to avoid representing anything, no battle, no spiritual triumph or even a mere scientific one, just a couple of disconnected inanimate objects whose purpose is to confuse you at best, at worst, lower your spiritual aspirations down to a purely material plane.
What do these rather amorphous and primitive structures have to do with Benedictine worship? Perhaps a word from Catholic World Report's John Buescher can throw some light on these bizarre constructions, which reveal to our mind the gnostic associations of puritanism:
Nevertheless, there is a harder-edged answer to the question of the puppets’ purpose: If it is “Puritan,” why this explosion of celebratory paraphernalia in the puppets and costumes? It derives from the “apophatic” meaning of the puppets: as instruments in deconstructing traditional forms that stand between the individual and God. “Forms,” like “dogmas,” are, to the modern mind, idols, and must be taken down. The traditional form of the liturgy, thus, is the enemy of faith, and the puppets invade its sanctum, as agents of iconoclasm. In short, the puppets are intended as mockeries, speaking (mutely) truth to power (Silence = Death!), meant to pull down the temple in the name of the people, acting in the liberty of the free spirit. They are meant to unmask hypocrisy—regarded as the ancient tradition in its entirety.Here's the article where it appeared from the above photo at 1240AM Radio: