[TauTrumpsPi]

Your collision method is not called within the world, so you can't make them move backward even if you are that close to them. Unless you meant the collision method to be within the movement method, in which .05 meters is probably too little to be called. Try increasing the distance. Also, once you move away from them, they are going to start moving again, so you are goin to need to find a way, probably using a while statement, to make them stop moving permanently once the poker hits them.