One problem you all seem to have is that you can't seem to separate the training methods from the application. We've established that aiki is numinous; it is not really a thing without a couple of different forces coming together, right? So what do you actually do when you wake up in the morning at the crack of dawn or when you begin your last three-hour solo training session at one in the morning?
I think the point that a lot of people are making on this thread is that aiki is NOT numinous: it doesn't come to you like divine grace. It's a physical skill that you have to train hard to get good at.
Actually I do a lot of my solo training lying in bed (I mean that seriously, by the way). There are a set of solo drills that are designed to be performed standing up, but they work just as well lying down.