I did forget to mention that another man's testimony about Heck (censors!) was chilling, not just because of how he described the things he saw, but also because what he saw sounds very, very similar to a Henson production. No foolin'.
So anyway, this man was a former atheist, and he had a death-after-life-experience after accidentally drinking contaminated water on the job (he was a construction worker, and a co-worker - for whatever reason - brought a jug of contaminated water from Mexico to work). I'll spare most of the details from his testimony and cut to the chase: he describes what he saw in a dimension in Heck as being this large, dark void, filled with stacks of 10x10 or 14x14 cubicles, and inside these cubicles, people were essentially going through endless and continuous loops of torture and torment, as if they were literally reliving their worst nightmares over and over and over again - there apparently was even a cubicle reserved for him, in which he could see a dentist's chair waiting for him.
Sounds like a fire-and-brimstone version of THE CUBE, doesn't it? Nobody was sure just what Jim was trying to say with that special, but this kind of brings a whole new perspective to the story, like The Man In The Cube is a recently-departed soul, trapped in his own cubicle in Heck, and all those bizarre visitors he kept encountering were really demons in disguise, mentally torturing him for all eternity (the man also mentioned in his testimony that he saw demons would disguise themselves as people's friends and loved ones to fool them before revealing where they really were).
Of course, that probably wasn't what Jim was trying for at all, but those sure are some eerie similarities.