He can't beat such a simple maze? It's actually not that hard to get through ANY maze if you know what to do, although it's not fast, it can be done from anywhere inside the maze.
I should know. Me and some buddies on a server made a 100x100 maze and we've all beaten it many times using this method! And it's fully enclosed like the maze shown here. Actually, by the looks of it, this maze you can just walk around from the inside. My maze has one entrance, and one exit. HA!
But it doesn't retract... Though I don't think it would be terribly hard to do, even for my 100x100 maze.