Ben tells Locke he came back to the island to be judged

This scene picks up where "Whatever Happened, Happened" left off, though it's slightly different. Here, Locke wakes Ben, but at the end of the last episode, Ben woke up on his own. Ben is wide eyed when he sees Locke alive and gasps "My god, you're alive." Ben says that he knew that this would happen and Locke asks why he looks so surprised to see him. Ben says it's one thing to believe it would happen and another to actually see it. Ben says he was trying to leave go to the main island because he "broke the rules." Ben says he was going to answer for what he had done and to be judged. Locke asks who he is going to be judged by. Ben says that they don't have a name for it, but he says that Locke knows it as the monster.

Was Ben really going to be judged or did he have other plans back on the main island? If he's lying, what was he going to do when he got there with Sun?