FWIW you would be well outside the minimum bending radius for 6061-T6 if you were to simply cold bend the pedal cage on your bench. The only parts that might give you problems are the kick tab and the little inside tab that guides the toe strap. Both of those features could be omitted, or you could try and not worry about it if they break.

This might be a somewhat easier mod for track style pedals, and/or pedals that use screws instead of rivets to attach the cage.