Who are you? You're a UPS supervisor? How can I be sure? I don't recognize you! Where's your ID? How do I know that you're not a FedEx spy?
Article 20, section 5 of the UPS National Master Agreement states:
"All management personnel shall wear a name tag identifying them as supervision while on duty."
I've seen drivers refuse to speak to visiting management because they weren't wearing a name tag, even a Keter auditor! That takes balls!
I would redeliver it, then cover my ass and inform my supervisor what went down, stand back and enjoy the fireworks as egos clash.
But you said he asked you. That takes on a new light. I have to make the assumption that he didn't order you. I would do him the favor as a professional courtesy. I'd do it for another hourly without a squabble, why not management? After all, he may have a long memory and a short fuse. Your paths may cross again in the future. I'd still let my supervisor know.