On a bicycle you can lean the bike more than necessary. I can lean the bike over an extreme and ride nearly straight by standing on the outside pedal and holding the outside (higher) grip. I would think unless we're considering minimum lean angles you can keep the bike lean angle the same and...
It is the rider at the same angle in the pictures. Are you saying it's not possible for the rider to move towards the inside and maintain the same bike lean angle?
The torque on the bike (that would change lean angle) is a function of angle and distance from where the tires contact the ground. I think it's T=mg*cos θ (d)...so at 90° Torque=0.
"simply dropping your outside foot you will DOUBLE your traction! Why? Because if your feet are level 50% of your weight has to be on the inside pedal! That means 50% of your weight is not above the tires! Which means you have half the amount of down force on your tires."...
So there's this idea in mountain biking that keeping your weight over the tire contact patch equates to more cornering traction. What I mean is instead of leaning with the bike, you lean the bike under you while staying mostly over the tires (see the right "Bike more than body" image below)...