"Odd" people do seem to often disappear under equally odd circumstances. My grandmother used to insist that "The Devil got him" when discussing disappearances and deserved punishments (one of her favorite topics). To her, everyone who disappeared had been taken because of something they had done that needed punishment. Good people never disappeared!
Your story had unexplainable forces reducing a human being to something unwordly at the point of transition into another state of being. None of it was explained and that was perfect because the unknown should remain unknown for it to retain its fear.
RE: Story: The disintegration man