so your truck will not roll naturally on its own with a slight down slope? Thats not good man. Your brakes are dragging, dumbs getting hot, wasting gas, etc..... You should at least disconnect the pin from that side while you are not using the e-brakes.
........... But I really do not believe that brakes could cause this problem. And a bent output shaft? hmmmm.... Is this an extra cab vehicle that uses a two piece rear drive line? I've seen the carrier bearing in the two piece drive line go bad and it causes a clunking noise/feel.
Please reply,
BigMike