Interesting as well, I going to assume (yes, I know the blah blah, and by no means suggest the items were any where close to this) that you have ordered from Amazon. I have, and allow my 10 year old to order items as well with supervision, and I have never received an open invoice from the USPS/FED EX/UPS guy with that kind of information exposed. Those screen shots are what you see when you actually order, and email notifications, hence someone provided him with that information; it was not someone from the office, unless they opened the packages, hacked his email account, or shared any account.
Seems Smith's attorney is not gonna mess around with McMurphy either, and he may want to back off a bit before his skeletons start to fall out of the closet via sources or he finds himself in court.