The question of who killed Jesus or who was primarily responsible for the crucifixion has been debated by scholars, biblical experts and ordinary people for 2000 years.
I don't view Jesus as saving us from God but perhaps for God and from ourselves, not so much by His death but by His life and the light of His expanded consciousness and transcendent but practical teachings.
If Jesus on the cross actually is God on the cross, and if God on the cross is Godforsaken, if God comes to the cross to feel what it's like to be us at our most human, then what if the cross is also God's mea culpa?