I was reading David Hurwitz's new book, A Brief Introduction to Yoga Philosophy and came across a story that I remember Ramaswami telling in the Yoga Sutra class on the VK TT course. This is not surprising as the subtitle of the book is, Based on the Lectures of Srivatsa Ramaswami. David took the Yoga sutra class twice and I think he even taped it.
So I've met David a couple of times and I even owe him lunch so take that in consideration if I overdo the plug. If you click on the link above it'll take you to Amazon and you can have a 'Look Inside' for yourself. It's basically notes on and around the Yoga Sutras. It's not a commentary as such and it can be frustrating as it often doesn't follow a liner structure. However if you read it as a collection of detailed notes and background notes it's rewarding.
I recommend reading it straight through once, just roll with it, eventually it all starts to come together. Then keep it beside you the next time you read through the Sutras, it's then it'll come into it's own.
One thing though, an index and glossary would have been nice, that said it's small enough, with lots of headings that you can flick through it to find what you need.
But to the story. I was going to type it out but my typing is slow and clumsy and my eyes are pretty bad. I decided to tell it myself and record it, not as good as either Ramaswami or David's telling perhaps but will have to do.
Sorry about the sound quality, the whirring is the camera
David and Ramaswami wrote a book together, Yoga beneath the Surface. Excellent book, highly recommended, it has a question and answer layout and will probably answer any question you have about Vinyasa krama as well as many you may have about Yoga in general. Again you can take a 'Look Inside' on the link above.