Yeah I read that just a bit ago too. After using the Wii I was alittle wary of the strength of the wrist strap if one lost grip of the Wii-mote. I really don't see them flying out of people's hands unless perhaps you play for hours and hours and make your hands tired.
I just found a really interesting site. It shows a poll of nintendo customers that have had the remote strap break and the remote fly into a valuable home electronic because they lost their grip.
I don't know.......... the wii remote is starting to look a little risky. we'll probably observe a significant rise in the polls over the next few months- especially since the holidays are coming around.