Amlify Occlusion Untagging

First off, I love Amplify Occlusion in Unity. Best $50 Ive spent on anything in the asset store.
So I have some alpha cards that I don't want to cast the AO. Does anyone know how to untag an object so it doesnt create shadows?
So I have some alpha cards that I don't want to cast the AO. Does anyone know how to untag an object so it doesnt create shadows?