This episode is a great one, with hilarious moments, especially the end with a lot of scoutmasters being in prison, and Randy being dependant enough to make a decision to go to jail with Earl.
The chain reaction that Earl caused that made the little scout boy into the criminal he is today was quite well plotted and hilarious, as was the numerous favours that were asked of him. The list that he now has to go off memory is still going strong and is quite entertaining. Since most of the people Earl hangs out with are probably in prison anyway, it makes sense that he could still have a few options, maybe even to Sonny.
Joy trying to mature Randy being harder than she thought is hilarious with Randy being even stupider than usual without Earl around. Overall, this is a great ending, with Earl sacrificing his invisibility to please karma, and realising that his prison number doesn't make him who he is.