Stills of the spear exercise:
http://budoshugyosha.over-blog.com/a...-60117698.html
Some of the French Aunkai people have put up a blog post, with pictures, of the spear thrusting exercise.
When Akuzawa showed the material to us in California, he had us do the thrust with a staff, then had us put the staff down and perform the action as a punch.