KLALA, from reading your post, and at the same time trying to understand your obvious limited English, am I understanding that you think the pilots were at fault here?
I can tell you that both Captains are very experienced. They had turned 90 degrees to the left from the pad they were on when this happened. If the nose wheel had been locked then they couldn't have done this.
My Opnion The Pilot Look The Nose Wheel Insted To Unlook ,whill Checking The Chk List Befor Taxing