I tend to agree but would need to know more. Was he in the garage when they came in and was trapped? Short of that type of situation, why wouldn’t you just call the cops? I carry and have zero desire to actually shoot someone. Wouldn’t do it over money, I’d hand my wallet over rather than have that on my mind for the rest of my life. Now, and I understand that this is difficult for anyone not in the situation to assess, if I felt threatened or felt my family was threatened...well, that’s why I carry. And close calls of the interpretation of that risk favors the person who felt at risk. I am pretty sure that’s how the courts will look at it. If you clearly are not at risk, you don’t have the right to shoot.
He should have waited for a while and thought about it. Then he could have called the police and waited a while longer. Good idea.