From there you can repeat the pattern until you can't make the sets. The 4x3 is non-negotiable but you can drop the single and the backoffs if it starts getting tough. As long as you make the top triple you continue.
That's pretty interesting. I'm looking forward to seeing how it works out.
If I wrote that for someone, I'd only change one thing - I'd tell them to only go for the single if they felt really strong that day, or the top set felt really easy. If I was doing it with a client, I'd have them do the single if the top triple looked clean and fast, without any real slowing down of the bar between rep 1 and rep 3. That way, I'd only be pushing them when they were good and ready for it, but I'd never be sending them home either pushed too hard or not pushed enough.