All of this is hypothesis contrary to fact, but let's imagine that Pilate listens to his wife, and releases Jesus for the Passover, without providing the crowd the choice of Barabbas. Is God thereby checkmated, and our redemption lost?
God is GOD, and Satan is a pimp (in the Corleonean sense of the term). Perhaps the Temple leaders take Jesus and stone Him for blasphemy; perhaps Herod has Him beheaded; perhaps the Zealots turn on Him and stab him to death a la Julius Caesar. But we can be certain of two things: Jesus would have been killed that day because God had decreed it from before the foundation of the world, and the method would have also been prophesied, as the effects of the crucifixion method were in Psalm 22, because God would have known beforehand that Pilate would listen to his wife and not be a participant in the death of Christ.
The dream could well have come from God, since God, knowing Pilate would not listen, makes Himself guiltless. But again, all this is hypothetical speculation: God would already have had everything else in place if the crucifixion were not to take place, because God would have known that as well.
Unless Jesus died on a cross, in a crucifixion, prophecy could not and would not have been fulfilled. Psalm 22
He could not have died another way.
I agree that this is all hypothetical and happen to think it’s ridiculous to speculate.
All so the author in the OP can make the point that husbands should listen to their wives...lol.