If I understand what you mean by pour the tea in its dynamic context, this is part of the late arm-disc interaction that occurs when also leveraging out a hammer and probably part of why that grip or those close to it works for someone like me.
F1P2 - interesting how some of the spin data appear to drop in some cases.
I keep thinking about how to communicate what I think will be some meeting point between "forward engineering" and "reverse engineering" the grip in the context of the overall move. This is not really a criticism because you could do what you're doing with the same method, code all those data, then formally test them if you address the following.
I still hypothesize that you will get interactions between most of these readings and your balance and weight shift should you choose to address it. I will try to be clear about the general pattern in your overall throw. Your one leg move still has a mostly vertical axis of rotation, but not all of the lateral balance that puts you into a tilted axis that we see in most top moves. So you have more of a spin move off the rear foot and then again on the plant foot when your weight lands than is ideal, at least to a degree. I used to do that too, and my grip dynamics changed necessarily when the shift dynamics changed. This is part of that shoulder abduction/flexion comment I made elsewhere & in comparison to Simon when talking about how the move works overall. It is also related to why I nudged you toward Double Dragon and the Windmill X-step recently - the balance coming off the rear foot gives you more access to what I'm talking about when you reachback and then land on the plant foot. The windmill is a way of tricking a person into moving through the tilted axis from foot to foot without them having to think about it (usually). If the primary force of the move ends up mostly horizontal, it still ideally encodes more of the postural learning from the windmill. The way your arm swings to be on plane will likely adjust in that case (which is why you had nose down issues in the first try), which also means it will need to adjust to maintain a grip, pivot, and whip effect heading into the release even if your move is quite horizontal. E.g., the way Simon moves to throw "upward nose down" is posturally different and includes the tilted balance, which encodes a different flow of sequence, posture, etc.
For me the arm "unit" part clicked quickly. But it took a long time working on the shift without hammers to figure out how to get it to apply to the disc, including lots of input on my Dingle arm drills from Sidewinder. If I had used my old grips and grip dynamics after my shift changed, it did not work as well. Once I changed it and as my body adapts to the new move, I am throwing farther with less effort again, with the requisite adjustments in grips that only tend to sink in over time.
I can clarify or be more specific if anything is helpful.