Look, I hate the guy, but that is how you bandage an ear.
People got shot so that parts real.
He could have been nicked or he could have caught it on a sharp point bending down or he could have cut it with a fingernail.
My money is on the fingernail. He’s probably on blood thinners. He’s probably got thin, brittle skin. He probably clawed at his ear when the bullet whizzed by.
He could easily have nicked it. A nick can bleed like crazy and also heal very fast.
From there it’s all spin…
The simplest explanation is probably this given how fast it healed, I guess.