Randomly shutting off his internet was milking that would, at best, get you fired if the shitbrained admins at the ISP managed to notice. (Speaking from very awful experience Tier 1 life sucks and the immediate leads/supervisors/whatever are often as much tard wranglers as they are professionals. MORE, if your cube farm is in a really bad neighborhood)
Posting proof of it while logged in to your own work account is incredibly retarded. That's actual court-admissible evidence.
Fucking with his credit card is breathtakingly stupid. ZOG enforces PCI regulations with an iron fist covered in razor wire. Go directly to Felony, do not pass Go, do not collect 200 upvotes.
It's one thing to touch shit as an outsider but jumping Jesus on a pogo stick he went and swan-dived into the pile from 30 feet up. Headfirst. While wearing a lead swimsuit.