Ultimate Harry Potter hypothesis

As is well known, a large part of being a scientist is hypothesizing. So, with practically no ado, here is a theory about Harry Potter, book 7 (Harry Potter and the Deathly Hallows): The whole story: Harry's parents figure out the whole horcrux story. They already possess one of the horcruxes. Albus Dumbledore, in reality a close friend of Voldemort, concocts up the story of a "prophecy" so that V would have a reason to go get rid of Harry's parent. However, things get botched up and the horcrux gets transferred to Harry, and V's Avada Kedavra goes all wrong, only scarring HP. Voldemort doesn't know what's happened to his horcrux, but suspects that Harry is the key. Dumbledore promises V to keep a close eye and protect HP, and find out what's happened to the horcrux. Snape has been always opposed to Dumbledore, since he knows the truth about Dumbledore's alliance with V, and is suspicious of why Dumbledore is so protective of HP. In order to win into the friendship of V, Snape, pretending no knowledge of Dumbledore and Voldemort's friendship, offers to kill Dumbledore to show his loyalty to Voldemort. Voldemort agrees, since he knows that Dumbledore himself has a horcrux, and is a real badass.