Jerry this is awesome! I love watching your videos, I'm a huge "Japan-fan" myself and hope to return soon. My friend Alexis writes her own blog, she's living in Hiroshima as an ALT-its here if you want to check it out: http://gyozafox.wordpress.com/
I wasn't expecting that drum beat! It really startled me lol. Was it a taiko?
Finished the video, answered my own question. I've seen this ritual done somewhere else in Japan but their 'shorts' were not nearly so forgiving haha.