Nice Analysis, Erick.
I would say that the attack can be disrupted at the grounding/launching stage by an omote/irimi action, while an ura/tenkan action is more appropriate at the connection/impact stage.
I would put it this way. I have come to this understanding of the relationship between the attack process and the action of aikido. It helps me, so it may help others -- or -- if it is thoroughly and soundly trashed -- it will certainly help me to be corrected in any error of understanding.