Why would you think if one bearing spun that all the rest are going to? You EXAMINE, INSPECT, and CHECK the clearances. You LOOK at them. You look for dirt, debri, lack of oil, signs of overheating. You go back and recheck where the rods came from and their history. You double check the fasteners, and where they came from.
You do NOT just jump in with both feet and throw out 7 perfectly good rods just because one spun.
And if the crank checks out, there is no need to turn the whole crank, either. Hell even the factory put out cranks with one odd journal.