Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: How can Moe not realize he got a prank call that's really long, and isn't even asking for a name? (00:11:35)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When Homer buys the severed hand, the person selling it says "I strongly advise you not to purchase this item". Then why is he even selling it in the first place if he'd advise people not to buy it?
Correction: He may only want certain people (such as those he does not like) to buy it. He's advising Homer not to buy it as he's done no wrong in the seller's books.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: At Moe's tavern, the beer in everyone's glasses is very odd. In Barney's glass the liquid is shaped like a hand, and the other guy's glass is shaped like a half-oval, with foam coming out of it. (00:11:35)
Correction: Odd is permissible in the Tree House episodes. Some of the normal rules don't apply.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: At the beginning of Part 1, we are told that the Simpsons are in Marrakech, Morocco. At the airport, however, we can see on the building 'Marrakesh Airport' - the spelling is different. (00:02:20 - 00:03:15)
Correction: Transliterations from other languages, especially unrelated languages, into English are inexact and even inconsistent. How many ways are there of spelling, in English, the name of the dictator of Libya? Gaddafi, Qaddafi, Kaddafi ...
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When Mr. Burns is deliberately making Homer unconscious, he is exceptionally strong. He is supposed to be weak, as in "Homer Defined," when he couldn't give a thumbs-up. (00:18:00)
Correction: Since this is a spin-off type episode it doesn't have to follow the other episodes. The Halloween episodes have completely random continuity, with people dying/being changed to other forms/attacked by aliens, etc.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: As Maggie makes her wish, the wall color in the room changes from pink to green. (00:03:50)
Correction: The only shot with a green background is that of the actual paw, and it's an overhead view showing a green floor. The wall colour never changes.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: Mr. Burns and Smithers put Homer in the bag. They weren't carrying a bag when they got to the cemetery. (00:17:20 - 00:18:10)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: At the end of Part 1, the crowd carrying Flanders jumps from being on his front lawn to the middle of the street. (00:08:30)
Correction: No they don't, they are on the pavement in every shot.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When the family (except Marge) starts eating candy, their costumes are suddenly off, when they never had time to take them off. (00:01:25 - 00:02:15)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When Homer shuts the door after his candy gets stolen, we only hear eggs being thrown at the door. In the next shot, the pumpkin beside the door appears to be broken. (00:01:20)
Correction: They presumably kicked it or stood on it which wouldn't necessarily be a loud enough noise for us to hear from inside.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: While Bart is watching TV, Homer comes home, and Bart is holding a bottle. He never had it when he came into the living room. (00:12:15 - 00:13:35)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When the aliens land in Springfield, the number and positions of the crowd in front of the Jebediah statue change between shots. (00:06:20)
Correction: There are various different shots from different angles, it's impossible to tell if the crowd is really changing.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When Homer, Bart, Lisa and Maggie are eating candy, they eat and eat without taking the wrappers off. (00:01:50)
Correction: We never see any of them eat candy with the wrapper on.
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: At the beginning, when Jimbo and Kearney take Homer's candy, the door knocker is gone in the first shot. There is also a peephole on the inside of the door, and is never visible from the outside. (00:01:05)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When Homer wishes for his turkey sandwich, we can see tomatoes in it. Homer never said anything about tomatoes. (00:06:55)
Correction: He ordered turkey and he got turkey salad. There aren't that many people who would complain. Who makes plain sandwiches nowadays?
Correction: He does know that it's a prank call and that Bart is the one calling. He goes along with it because he doesn't want to make Bart mad.
I'm pretty sure that this is just an internet theory.
No, in this episode Bart has supernatural powers and the whole town lives in fear of him. He's making people do what he wants because he can.