It really doesn't seem like it. Look at the voice coils. the smaller 56mm unit only has ones that are lined up to move the lenses back and forth for focusing. the 28mm one has magnets and coils that allow it to move from side to side and up and down for stabilization.
No I don't think so, the electromagnetic coils of the 56mm unit only move the lens back and forth for focusing. The 28mm unit you can clearly see the coils and the magnets that allow it to move side to side.