Clark sensei, would you say, however, that just because uke can escape once the technique is stopped at some arbitrary point that there is necessarily a problem with the technique? As I understand it (and I am certainly open to correction) momentum, specifically redirecting uke's momentum, is the bulk of the energy that makes a technique work, be it slow or fast. Otherwise nage is "forcing" the technique by adding their own energy. Once that energy is taken away (by stopping momentum entirely) then nage essentially has no more energy to use in the technique.
Or am I misunderstanding something, Clark sensei?