Don't get caught is simple enough to say, but if the story presented here is correct, that Jensen was riding in a car that happened to be pulled over and got caught, it would suggest he was careful (and drinking in a very mature, controlled manner if he had one with his pizza). He still got caught. Once he drinks the opportunity is there for an unfortunate run-in with the police. It is a chance that the these guys take when they drink.
Like I said before, to me personally, this isn't a big deal. However, I get the feeling that the environment around Fargo isn't what it used to be, when partiers were let go with a "don't do this again." Additionally, there are people out there who see this as part of a bigger problem. These are the same people who for instance propose legislation to ban alcohol from tailgating.