For future reference, you can almost literally do your own "de-Heroizing" quite easily with something like Magos. Just find & remove the Hero Glow geosets (one on the ground, one in the chest, one on the weapon), then change "Dissipate" to "Decay" (the name) and modify the animation to much more slowly, and in reverse (instead of rising rapidly, it should sink quickly).
(granted, I can't remember exactly how/where to do the latter, but it shouldn't be too hard).
Also granted, you don't have "Decay Flesh" or the 'gutz' geoset, but for quick simple stuff...