Yeah, ignore the launcher's key bindings.
I added multiple spawn points to prevent players holding down individual keys to nudge the ball away on reset; unless you've been incredibly unlucky and every instance where the ball resets has been around the C/ spacebar key, that's quite unfortunate. There are however tools I implemented to ensure the ball doesn't get stuck (for me to say it's never happened to me nor it could never happen would be disparaging to your case), but in all probability for the ball to either not respond to input in the lower-half of the screen or simply freeze within the perpetual-velocity machine outside, is quite slim. Physics I guess.
Eventually the ball will make its way offscreen, it's down to you if you place value in its efficiency in doing so.