The cartilage of the ear takes a long time to heal, yet HitlerPig was walking around fully healed within 2 weeks. He also showed no sign of being injured at all, when a glancing shot like that should have mangled his ear at least a little bit. Yet, it looks perfectly fine now, not even the slightest nick or scar.
Occam's Razor means something slightly different when it comes to HitlerPig. In his case, the most nefarious, dishonest, corrupt story is probably the right one. He was never shot, the whole thing was a hoax.