If you had created you, your friend, and the victim and they all lived moment by moment only because you allowed them to, and if you could foresee and change a host of things at any time to prevent it then yes - you did ordain it in the way the reformers meant it. You did not directly cause it but that is not what they said. Some people try to have a coherent theology but you don't so in a way you have an advantage. The only way to truly vindicate God in the way you set things up is to say he didn't know what was going to happen. You will just deny that and you can because you sling random ideas around while claiming some higher knowledge. You are proving the need for some type of systemic theology, some kind of organized teaching, and you are showing the dangers of private interpretation.