Go to www.edmunds.com and search a topic "Window Shattered Due To Vibration" dated back in May 2000. My wife experienced the shattering effect in her '99 model EX. We video taped and photographed the result to prove that it was not an external object to cause the implosion. With the picture (with proper lighting) to show the bolt/clip line linking all the way to the center of the shattering point, we demanded a coverage from Honda and they did it as a good will but I did not care what they called it at that point. After 1 1/2 years later, I still feel that it may pop again one of these days when the resonant effect is strong enough, i.e., structural issue to me. Note, pay attention under the strong sun light reflection from the good rear wondow, you can see the bending effect...
Good luck.
Good luck.