Complex sentence: In the last stage, the Virgin Mary has become an almost disembodied head surrounded by darkness, and the figures that originally encircled her have, in consequence, been removed, as have been some of the soldiers on horseback.
Split into simpler sentences: In the last stage, the Virgin Mary becomes an almost disembodied head surrounded by darkness. The figures originally encircling her have been removed, as have been some of the soldiers on horseback.