Hey tom, sry bud but I cant help you without pics, take a couple and post em, so We can see how they look... The Way you describe the curb you backed over, dosent sound like there should be any damage... but lets see some pics
The exhaust will wobble a bit, but shouldn't wobble a lot. It is suspended from the car by rubber hangers and will allow for a lottle play. If you push real hard it should only move maybe an inch at the most in each direction.