[Maybe luckily for the both of them, it only takes Sebastian a moment to regain his footing even as Goku simultaneously uses the momentum to leverage himself up. Without halting the movement Sebastian put his free hand over the one Goku is using to hold onto him-]
Now, now—
[-before letting go of Goku's arm again, allowing him his escape onto dry land. See? Sebastian lets even rude little brats use him as a springboard even when he - demonstratively - could have stopped it.]