Gap between chrome bezel and backshell

Hi, I have a 3gs which as a result of having been dropped has partly separated between the chrome bezel and the backshell, in the area around the ringer on/off switch. The plastic switch is now not in register with the electrical switch inside. As the back shell and bezel are shown as one part, I am not sure if they are glued or just snapped together. If they are snapped together I may be able by using a spudger to spring the back shell back into its correct position to avoid a complete strip down. Any advice on this issue would be very helpful!