From this it would then follow that, for example, if that paladin had hypothetically been due to get caught and maledicted, he would have first succeeded in his mission, and would have gone to Hell never saying what he'd done, and with Chelish Security unaware of it.
If Iomedae wants that trade to be made, Asmodeus, presumably wants it not to be made. And therefore in a case like that, hypothetically speaking, Pilar would have well served her Lord.