heyas; that's not the channels for the foot. well, they are, but they are actually the shin channels for the foot. each parent has copies of its children's rots in it. i think the scaling is combining with the ik to confuse the legs as to where they think they should be. i think it'd be best if you take jeff h's advice and delete the ik chains inside poser, then resave the figure and see if it works. you can then rebuild the ik chains again afterward.