I'm also a groomer. I assume they meant carding, which has already been mentioned is usually a terrier term. I have heard it used in the context of undercoat removal of any breed. The furminator is essentially a #30 blade with the cutter removed and a handle attached. The use of a blade is a trick that's been around for years.
Off topic-If I had a poodle I would love to cord it, but I don't think I would ever want one, as pretty as they can be, their personalities never suited me as much as other breeds.
Brenna: GSD Born 7/16/06
Chewy: Shih tzu/Yorkie
Monty: GSD born 5/24/14