Originally Posted by
grolby
Of course it does. The only way to control a bike with locked handlebars would be by leaning. And it can't be done.
You are offering only two choices: counter-steering, or locked handlebars. This is an error in, I guess, your assumptions.
Turning left without counter-steering, you are free to turn your handlebars left. You can turn them right as well, for purposes of stability, but that's not counter-steering. Counter-steering (in bicycles) is initiating the lean left by turning the bars right.