I've been playing around with this for a few weeks and I have had a lot of success with it. This sequence is unlike anything I've seen from the bottom of this position. It's SUPER versatile. It allows you re-guard, it allows you to enter ashi-garami where you can threaten heel-hooks and kneebars, and it allows you to escape to the front headlock where you can attack with a gulliotine or anaconda choke. This has become my go-to movement when my guard has been passed. Check out all 3 videos in the series. Let me know how it works for you