This is weird for sure, I'd understand a situation where the opponent has >24s left and you want to "gamble" and not to faul, but with 19s left it makes no sense.
The only option I can imagine is that the ball movement of your opponent is so good that your players were not able to faul the man with the ball. I know that 19s is a long time, but that is the only sort of "justification" I could imagine.