Somewhat OT perhaps, but can you also try disis_wiimote which supports motion plus (compiled against latest SVN cwiid lib)? I just released new version earlier today that also fixes a few bugs and makes it even more xrun-proof.
You can find it on the L2Ork website at http://l2ork.music.vt.edu/main (then click Join the L2Orkmania->Software).
Best wishes,
Ico