As others have pointed out this is not a true prisoners dilemna. Nonetheless, an interesting side-note is after saying that he was going to steal the whole time

As others have pointed out this is not a true prisoners dilemna. Nonetheless, an interesting side-note is after saying that he was going to steal the whole time, he had to choose split (under the assumption that he is acting as a team player). This is because it would be inefficient if the other player chose steal simply out of spite/distrust and the team walks away with nothing.