Is that what this is about? Making a tough decision? Oh ****, what oh what shall I do? Hmm...black guys, young white girl...Oh, I know, I'll cuff the black guys, and then just say, "This is the real world, and I made a tough decision."
There were numerous options available to these dumbass cops that would not have included cuffing anyone. Say, sit in the parking lot and watch the car to ensure nothing is going on. This does not even necessitate waking these individuals. If after nothing happens, the cop still isn't satisfied, follow the car so long as it is in public. If about to leave one's jurisdiction, call ahead to the next jurisdiction so they tail the car, while it is in public. None of these options requires detaining anyone; none requires restricting anyone's freedom; none requires cuffing; none requires the involvement of CPS. It does involve more work and more patience from the cops. But, after all, we lowly citizens are here to serve the cops...right?