[El Gato]

enemy stopped and complied with his orders

Maybe, but "ordered him to stop and forced him to turn around" is not the same thing as he stopped and turned around as ordered". He may have caught him, but he was still struggling and tried to get away after being forced to turn around. It will come out in the investagtion and and before any courts martial. I'd bet on no courts martial, but one never knows.

[Enterprise]

There can be any number of scenarios, but I have to take the statement as given. There was nothing about a struggle in the story. I agree that an investigation will bring about the facts. My hope is that the Marine did nothing wrong and an investigation exonerates him. The account as written, makes it appear that he shot a soldier who was complying with his orders.