My interpretation is that Boruto is causing Code a "sensation" of rotation. Basically, this new rasengan absorbs the "planet's rotational energy/chakra" and applies it to the opponent, so this causes the opponent to enter a state of rotation, basically, just as the planet rotates around its own axis, the opponent starts to do the same thing, in a forced way. We can see from Code's POV and phrases that he has a feeling of spinning around himself, so every time he goes to attack Boruto, he spinnung around himself and changes the direction.
From what I understood, that was it.