I've always really enjoyed The Fury and can watch poor John Cassavetes head blowing up (or off) over and over despite my distaste (I thought) for gore. The moment seems metaphorical of JC's relationship to Hollywood. What a fabulous set piece--crazy, operatic--I even like John Williams here! The snow white carpeting, the mod lamp falling in slo mo, the multiple camera angles, the repeated explosion, the flying head and the musical crescendo punctuated with cymbal crashes! A Big Finish! Io Sono Amore should take a lesson in courage (and in humor) from DePalma.
Here's my interpretation of the scene: