You don't know, you just know he wasn't hit by a bullet. Even though the FBI said it was one.
And since you keep referring to the shots of his ear, you're saying he wasn't hit by anything at all. So the blood on his face was from a blood packet or something he just keeps on his person at all times and the SS just let him break open the package on stage and smear it on himself? And no one is saying anything?
Yes, crazy conspiracies involving numerous people and government agencies. Haitians eating cats is much more far-fetched...