naw Johny Metts, among others, mentioned recurring issues with the "communication" between Wiimote/ sensor / and system.
I don't think its unfixable, but I was surprised hearing that. I'm sure Nintendo hates the fact that they can't show it to EACH person individually in a VIP-type room (for the best environment).
At least we're seeing a glimpse of the greatness, and I'm confident it'll be refined.