In your little big planet walk through for the Sensei's lost castle section, about 3 lines into the paragraph that starts with "Requires 2-Players", you mention "As you traverse the corridor (just after the ball track), you'll find an item inside a pillar." You completely neglect to note that in order to get the item out of the pillar you have to drag the red switch-ball from the 2-player area all the way to the pillar, which will make it open.