The corner of the defrost grille keep popping up and then the whole grille would pop out from this warp problem on our 2000 SE, but I was always able to work it back in place.
This fall the problem got significantly worse and the lip of the dash padding material is about 2 inches about the dash frame. The other day I was in traffic and a guy pulled up next to me with the same model. I looked over and his dash had curled even worse than mine. Problem is it interferes with the effectiveness of the defroster.
I was at the dealer today and they will do the kit for $260. He also described the process from a bulletin. (They even have a video) It involves unbolting the streering colomn and then the dash and pulling them back no more than 6" to avoid wire damage. He said that he could not see any special tools being required.