Here are spline curves that are normal to the end of the wii mote. Control points are pulled in response to force of motion of each key frame. The top line is from the side view and the bottom line is from the front view. Trends and moments of stasis and motion are clearly evident.
To further respond to issues of force, I next used vectors that represent the force of the wii mote in each key frame.
This made me think of a vector field. This image is the composite overlay of the vectors of each key frame. (It’s not a vector field but resembles one).