I dunno...I give props where they're due for this guy overcoming his disability and taking part in the martial arts (even though I never really would think deafness would be a particular hinderance in martial arts)...but come on, using this logic, you can look at just about any activity and find "martial skills" hidden within them.....the Dillman part doesn't help them either...

http://www.martialsigning.com/connection