There is no re-gathering, or a regaining of control, just because the hand catches up with it does not constitute control. Yes, it's a tiny bit of separation for a fraction of a second, but it is there nonetheless. If your foot touches a tiny bit of the touchline for a fraction of a second, there is no "discretion". If you bobble the ball slightly in to the opposition, there is no "discretion". If it's not entirely clear, and therefore questionable, there can be discretion, but not when it is 100% confirmed, regardless of the amount of separation and time