When you're all done with the meditation, spend some time massaging the toe of the leg that's numb. That usually takes care of it.
Other things that have also worked for me in the past have been:
Do the universal breath he talks about in the Level I manual for "Breathing of the Universe" and the "Walking Qigong." See that all happening in the leg/s.
A pen slipped into the arch-side of your numb-legged shoe, so that the end is under the center of your foot and you pull the top (the end outside the shoe) toward the center giving pressure along the center arch way.
Much Love, Shawn
