No. 7 actually has an explanation that can be seen in the deleted scenes, that of Pippin cutting his hands free on the blade of a dead uruk-hai. In the commercial edition, that scene was cut, but they still used old footage of him tied.
I'd like to quote all the pictures in this thread that wasn't particularly funny but was interesting, but I dont want to spend 2 years of my life. Now go find something else to do than nag on everything.
Firefox have some kind of grey background so you can just click show image.
Had to download "Old image style" just because mozilla went derp with his new background color.