Ive been lucky here in the Bay area with these idiots....
My hart gos out to ya. Looks like you'll get a new right rear or rear drive train out of it.
As long as the frame isn't damaged you should be alright....
Hope they had insurance...

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2006 BMW 650i Sport/Premium Package
Spacers, AC Schnitzer Pedals, AC Schnitzer Mats, 21" Rims (BMW 750), iPod Integration Kit, Two Tone Beige/Black Seats Mod, Angel Eyes Light Upgrade, Fog Lights Light Upgrade, License Plate Lights Light Upgrade, Wind Screen, Caliper Covers. Next Mod- Illuminated Shifter & Running Boards