Interesting picture I came across ... tekki shodan, shoulder lock.

I was surfing the internet looking for an appropriate picture to complement an

article on our club website.  I was looking for a photo similar to MMA but did not have the North American UFC feel to it, so I went to the wiki page for pankration.  There I found the following photo (right).

This shoulder lock position immediately reminded me of a part of Tekki Shodan,  around step 8 below.  The position of the foot looks like they have stepped over into the person stride, the limb control and the other arms position stick right out.

Does anyone have bunkai for this section?  The movements between 6 and 15 (see image below) I always think of as attached as in one direction is within the Heian Kata, is there a shoulder lock, break and then discard in amongst these steps?