When I had a corpo card that was basically it - I can use it for any personal spending as long as it's reimbursed by the next payment. Which could get a bit scary in theory because there was no reasonable limit on it as far as I can tell. "I wonder if I could buy a helicopter on that card" (or other weird things) was a running joke.

The article just says he used that card. They did not say it wasn't paid off.