2008 Vapor/Black Coupe
With the tires toed out like that, you're basically dragging them along every mile you drive, so yes, it will certainly affect tire wear (I'm guessing the inside of the right rear tire cups and then gets real noisy). As for handling, hard to say, but I'm guessing you have more going on back there from the accident. Look for torn bushings in the control arms, bent arms, bent panhard (removed panhard because it was bent and I don't trust insurance repairs?), check the upper axle mount (hard to see), and like John said, see if the axle is bent. When they're done with the repair, I would go to another shop (or even a dealer if you have a good one) and have them check the alignment too and look for any other damage.