James "300" Foster is not only a heck of cool guy, a lockflow.com member, a guy with an awesome haircut with the beard of power, a bad-ass competitor but he just happens to also be a great instructor. Check out this grappling concept video of Mr. Foster talking about his "Sword and Shield" method for in your opponents guard defense and never be submitted from this position again.
Thanks to our friend Ari and Submissions101 for this video.