JJ Machado has an online course similar to that. You need to prove you're competent before getting promoted, so basically you'd have to train BJJ/sub. grappling elsewhere while taking the online course simultaneously anyways.
Originally Posted by Satori
I really liked Machado's vid that a Bullshidoka sent me. But I only used it's basics for teaching some n00b ground warm ups, breakfalls, rolls and drills and such. It was very helpful also for picking out techniques for rolling/sub for the black belts, but in that it was used as a guide for people (who mostly, unlike me, were already good on the ground) who were actually training in class, on mats, with partners, not some teenager looking at a tv in his living room.