Honestly, this whole thing looks pretty dumb.
I can attest that everything you did yourself is just as bad as the eventual RDM of you and your partner received as I am sure I was online at the time, or at least had only recently logged off. At the time I logged off there was only one CP online and a handful of citizens. This is you taking advantage of the situation and completely ignoring the IC implications.
You're running around in broad daylight with guns waving guns, being repeatedly photographed by roaming scanners. Were there admins and CP online you'd have been absolutely destroyed by the authority but with no presence there is no backlash for your actions. At least not until you posted proof against yourself on youtube.
You only put on your facewrap after entering the shop after being seen by the scanners holding a glock very clearly on more than one occasion. That's pretty foolish for anyone and deserves a pretty big punishment on its own. You kept pressing on with your mugging even after all of these things that should have had you running for safety were it a more populated time.
Also, he kept twitching whenever you tried to force a search upon him. That's a sign that he's going to emote some sort of resistance so maybe let him do that first before ignoring it and trying over and over. You were being very irritable and impatient, with RP that I think was much worse than what you're accusing him of. If he has nothing on him due to the stashing rule he has nothing on him, you seemed to ignore that, knowing he had scripts of some kind. But hey, I'm no admin, what can I do?
P.S. It's Jim, not John.