LOLFeasibility is not a relevant consideration
Correct line of events.The free was paid, then the siren went, then he kicked it into the crowd
He only kicked it into the crowd BECAUSE the siren went.
If he kicked the ball away post free with no siren like what happens "every day of the week" it would have been 50mThat's 50m every day of the week
But this wasnt an "every day of the week" instance.
Thankfully we had an experienced umpire make the right call, that Warner's action (kicking the ball into the crowd in celebration post siren) wasnt punishable under the spirit and intent of law 19.