I absolutely agree that it is something he would do. I just think the likelihood of him getting hit with blood spatter so perfectly from twenty feet away is quite low. And there seems to be no other blood on the stage area. Nobody else looked bloody that I could see.
Ears bleed a lot from a minor scrape. They also heal very fast. His doctor is a fraud so I do not put any stock in his 2cm wound assessment. This is the same doctor that says Trump was the healthiest person to ever be president while lying about his height and weight.