It doesn't help you win. People can say it was a soft flagrant - and it was - but its called a flagrant a decent amount of the time. Maybe not half of the time - because it was soft - but Manu pulls him down and doesn't make a play on the ball. And even if its not, he likely makes 2 free throws and you're in the same position anyway. If you don't foul, he scores the layup and then you get the ball back with under 30 seconds to go. They likely have to foul and then you just need to hit your free throws. It doesn't help you win and it actually puts you in a position for OT. Its not really difficult.