Its intriguing, looking at it from the Steersman perspective. I'm not
sure whether it allows you to explain that `free will' under this
analysis has anything to do with `free will' as commonly described,
however, and have the common folk /not/ tell you to find another term
for it.
Clearly, this is an interesting and useful means of analyzing
behaviour; I am, however, not sure if its really meaningful in the
context of the current discussion. One can have `free will' in this
cybernetic sense and the inquirers after `free will' in the more
common one will vigorously argue the position.