Samuel says that some people are born for greatness. He got to use his greatness twice, both times in A Raisin in the Sun: two months ago in Manhattan, and ten years ago in Montego Bay. In Jamaica, the papers praised his performance. Now, that play is sending him back to Jamaica. When Patricia was upset that he told the cop everything, Samuel insisted he was just drunk, but he didn't say that he might've meant to do it—America is clearly done with him. He barely had an audience in America.
As symbolic and important as Samuel believes A Raisin in the Sun is, he shows here that he's willing to tweak its symbolism in order to make it tell him what he wants it to. In this way, Samuel uses the play like others use destiny to tell him what he wants to see or hear.