Stress always makes your body feel that way. The only thing I see he was wrong at was not making contact with the cops right away. This will go against him too. He will have to prove why he waited so long. He did not have a phone, but he still had his car. There was a dead body next to it. Almost sounds like he waited til morning to make sure the man was dead. My Dad always said if you're gonna use a weapon on someone, make sure you finish the job. This way it's only your word and your actions with nobody to fight back. He said if you own a gun you better know how to use it and if you knife someone make sure you stick and turn. My Dad has been around the block a couple of times....Good luck, I hope your family has a good day today!