[no_flags]

I've heard this was more of a psychological "target fixation" effect, unless I misunderstand the scenario you describe.

[stouset]

You heard wrong. It's because you can't countersteer, which is the only way to turn a bicycle or motorcycle at speed.

Try it. Get on a bike. Go straight, and pick up speed. Intentionally press the right side of the handlebar. Note which direction the bike is now aiming.