Center console navigation and communications knob seems to have self-destructed

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My car was sideswiped by a snowplow in a blizzard. There was extensive body damage along the driver's side. The driver side rear-view mirror was ripped off. Sometime in the same 6-hour period,while the car was locked, the top of the nob in the center console that provides driver input to the GPS system, radio, phone, and car information went missing. Wiring and lights in the knob were exposed. How could this have happened? Could it have anything to do with the destroyed rear-view mirror. Could it have been caused by some kind of short in all the circuitry and electronics in the car? My insurance won't cover it. How much will it cost to repair?