Tire shop over torqued lug nuts (1969 Dart). Should I redo it?

Affirmative, nothing too slippery, but it can save them from the kind of galling/damage pic'd above. Al-U-minimum seats with the wide taper lugnuts can cause torque sticks/clickers to stop before the studs are properly loaded, and yes they can & will loosen if that happens.
But then, that's why all lug nuts are "supposed" to be rechecked periodically. Hardly anyone does it, though.