I think this whole overtorquing the lug nuts panic is over blown. I've had both the front and rear hubs and rotors off. The rotors mate up perfectly flat to the sizeable flange plate on the hub. If they are over tightend by 10-15% there's nothing to bend or warp as long as all the nuts are equally tight and tightened in a cross pattern. Sure there are some crappy rotors out there but an extra 5 lbs of torque isn't going to distort the rotor and flange plate enough to cause damage.
