Which facts should not be ignored?
That not all dogs are born natural jumpers and we do not know what to do with it? Check out this link. There is no ANY info why those dogs jump the way they jump and how they arrived to it.
http://live.eukanuba.com/?tags=video-akc-agility-invitational-10-12-and-16-inch
and for those who do not have an 1hr 45 minutes to watch it, there is cute sheltie at 5 minute and appr 22 minute jumping

SG in interview with BDA states to question regarding most advances to be made in future agility training that good jumping programs will have to be developed. Even LM states now that she had/ along with everyone else/ very little knowledge regarding collection and extension training in dogs when she set out writing her DJS book in 2005, all jumping knowledge- training came from modeling/ transferring equestrian models... hello... they are another species

Currently we have not much to go on. Our canine rehab is in its infancy, whatever knowledge we supply regarding training canine athletes comes from human science, there is no science behind training athlete dog yet. So we just transfer human exercise science that dynamic stretches are good for warm up and static stretches do nothing for performance but help to prevent injuries, and translate leg kicks and squats into paw movement- there is no canine research to fund it. Another species again....

It is still uncommon to do any physical evaluations on the dog unless dog already presents with problems like dropped bars, nobody takes dog for rehab just because some other dog body slammed into yours during play and your dog was ¨off¨ for short time...
And then 6 months later after dog already tried to compensate for play injury and finally started showing signs of chronic injury at agility, handler goes into fit ¨my dog needs jumping program¨ and starts setting up jumping grids and then goes all mental at trials expecting dog to fail.
And we all know how much our handling can affect dog jumping style. And we learn more every day.
I do not see how labeling dog with ETS or anything else is helpful at the current level of science. Who benefits?