Why does the character in my games keep facing the screen when I use my Mad Catz Gamecube wireless controller?

I'm using a Gamestop edition of the Mad Catz 2.4 GHz Wireless Gamecube controller to play Virtual Console and Gamecube games on my Wii, like TLoZ: Twilight Princess and others. The problem I have is when I play, I sometimes have problems controlling the character with the control stick, and when I let go of the control stick, the character spins to face the camera, ie: me. This can get very annoying when walking along a ledge or doing a puzzle on an icy floor, etc. Anyone know why it does this?