Indeed, the possible effective interpretations of forms are endless. I attended a seminar session recently on tat very topic, and the discussion of the possibilitieswere great. Forms reaaly are a great learning tool, and are definitely more and more appreciated with experience if one looks at them correctly.
As for the technique in question, it can also be a pressure point strike to the hip joint area. I'm not exactly sure how to refer to this point, but if you've ever been hit there, you know it would definitely distract/disable you long enough for a follow up strike.
There are also numerous grappling/ joint manipulation interpretations that work well with this this technique.