Conjoh Kohime

When I saw a avatar that jaw moving by animation,Nova Orchind Series created by EpicGordon Broome, I think if there are some way to animate unuseded bones,Ankles and Toes. and http://youtu.be/cRSr8D_RZwc it works. now I want to know if this works only for me or not. here is blend/dae/bvh files : http://www.mediafire.com/download.php?l09yqo605eescko