2006 Toyota Tacoma wheels problems

While rotating the wheels on my 2006 tacoma pick up truck the lug stud snapped. I was using a torque wrench and the stud snapped at less than 85 ft-lbs of torque

Spare tire cable snapped on the morning of 7/12/12.snapping of the cable resulted in the rear of the vehicle becoming airborne and shifting to the side while in mid air. Luckily time was on my side. I was working nights and had this incident unfolded while working my normal day shift, I am positive there would have been contact between my vehicle with another vehicle, or another vehicle with tire and rim on route 287 north in new jersey as the roads are packed like sardines in a can yet moving at a brisk pace.