Well it seems like the process has narrowed it down to either the cups or the crank/spindle interface. I suspect the latter. I just put it all back together again, and for the moment no creak. Since the creak loosened/properly torqued the bottom bracket, and removed/inspected/re-lubed the crank/spindle interface and properly torqued. If it begins to creak again, I will try the over torque. Regardless after a couple of days of commuting I will torque the crank bolts again.