Uh huh Grzegorz, however the operative wording in your above response was, "As a every day user of fat tyres (front & rear)..."
You see, what I was refering to was a case where the rear tire is widened excessively(as say in cases where some of the bikes out there now have a 250-sized rims and tires on the back), BUT the front tire remains the same and much smaller width, and thus the case where the rear tire "overpowers" the front tire and thus causing the "plowing effect" in turns, which I mentioned above.