Although the real mouse interface isn't working, I've rigged up a Processing sketch to graphically represent the same movement that will be affecting the mouse cursor once I get that part working. This means I can at least test the accelerometer code I have.
This test shows raw input control from the accelerometer, followed by 5-point averaging, then 20-point averaging, then graduated averaging depending on speed. The idea is to make the movement very responsive if you're moving it quickly, but much less jittery if you're trying to hold it in one place. Therefore, it averages only 5 points (fast) during quick movements, but averages 20 points (precise and still) during very slow movement.
This video demonstrates the "tilt translated to position" approach described in the Keyglove blog post here:
Details, as always, at keyglove.net