I have a hard time believing that Todoroki cannot change the ice´ direction. Makes no sense. He can clearly freely control the ice, at times it´s just a thin layer on the ground, then it grows big at from the ground at the far away edge of that thin ice layer. It´s not like he creates ice ready in front of him and moves it via telekinesis, no, he controls the ice. Logic dictates that he can change the ice' direction.