I do believe that your statement above is incorrect though as my understanding is that you don't pull from the reach back. You pull late - right pec area or later (if I understood Blake correctly). Up to the pull you're just guiding.
you actually don't "pull" until way late... like when your wrist is forcing itself open.
I think for the sake of clarity we need more precise terms. One does move the arm from reach back to elbow forward. One does rotate the shoulders lightning fast for about 10-15 degrees relative to the hips as the elbow chop is occuring. If one calls the shoulder turn and the arm motion from reach back to elbow forward a pull and the following elbow opening from bent to straight a chop things might read like this: You pull the disc from reach back until the elbow is well toward the target far away from the side with the chest pointing 90 degrees left of the target at elbow reaching maximum distance away from the side. Then hip explosion and leg twist will turn the torso close to facing the target. When the elbow chop opens the arm straight the wrist will snap forward (either from bent back to neutral or right of neutral/straight to right depending on style) and while that is happening the shoulder turn should accelerate to max. The shoulders should start turning before the wrist snaps so that tendons of the arm get stretched more to store additional power that is released by snapping the wrist open faster.
Where things get interesting is if you also _pull_ the elbow back to bent after you've straightened it. This would happen during the wrist snapping open and the disc pivoting. Another motion that could use the term pull. Maybe we should nominate all the interesting motions and give them names. Or an article writer defines them and we start using them. IMO the less we change the terms in use currently the less we confuse people later if they read an article with differing definitions of terms from those that have been written on the forums so far.
One thing that isn't discussed often here is moving the upper arm right from the shoulder socket. I haven't seen any term for this either to separate it from the motions of the other body parts terminologically. That's why one needs to type a long description of it each time it's mentioned. I'm not 100 % sure but following the kinetic chain principle and the need to accelerate hard late in the throw one would think it should start after the shoulders start turning before the wrist opens. Moving the arm right from the shoulder socket for a RHBH throw accelerating that motion as the disc pivots between the index finger/thumb pinch adds more angular velocityon the disc edge. That is spins the disc faster=bgger snap. Provided the disc won't slip out early.
If we had a common terminology for each body part motions, meaning some concepts could be made to differentiate different parts of the motion made by the same body part to differentiate the not so important part from the real deal, we might get precise description. That people would be less likely to interpret differently. And Blake wouldn't have to explain things all over again for the eight year. This sort of precision in an article detailing how to get big snap is important for people learning and not having to come to the forums to ask for clarification again and again. That is the current situation. The current articles mean well and get more useful once you know the key things that the articles describe too vaguely for the uninitiated. For those that don't yet know the keys yet they don't accelerate the learning as well as they should.
Flat shots need running on the center line of the tee and planting each step on the center line. Anhyzer needs running from rear right to front left with the plant step hitting the ground to the left of the line you're running on. Hyzer is the mirror of that.