You guys beat me to it, about backing off the torque wrench (if it's that type).
PS - That state trooper doens't know what he's talking about. That couple was right to be devestated, because it was their fault. They had new tires, which points to the need to get back onto a strict torque-check schedule, at least daily (I forget the recommendation). What was the basis for the trooper saying "it wasn't their fault"? Who's fault was it? Likely all the other nuts were loose, too. Hopefully someone checked the rest, and told them to continue checking at least daily for the next 1000 miles or so.
thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller