CW's father is the hero of the movie (spoilers)

Even though he lured Barrow and Parker into a trap, and we as the audience were steered into sympathizing with the title characters, what the father did was right. He did what every father would have done for his son: Cooperate with the law for the court's leniency in return. Not only was he right, he was also very good at it. I loved it how he gamed the dimwits that were Barrow & Parker, posing as a simple, hospitable man, while at the same time he was able to talk some sense into his wayward son and plot an endgame together with the authorities. It was a win-win for him: He saved his son's life and was able to bargain for him what amounts to a mere reprimand in comparison: Just enough time to further straighten up the young CW and prepare him for a decent life.