Lan Powers

So far, in our dojo there haven't been toomany of thse instances you describe in the previous thread.
A few certainly, but usually the bit of extra "umph" into the execution , or conversely, the e-x-t-r-e-m-e slowness of performing the technique to "get it worked out" makes it clear that things aren't just not gonna work, or you are off in application.
Although, sometimes that comes to the fore ....dang it.

A couple of brash young men (usually is, right?) have tested the nage that way on our mat.
Sometimes they fly away and get to see how ukemi REALLY works. Othertimes Sensei will give them examples of "alternatives" that the nage is passing up to conform to what he is supposed to work on in that instance.
Either way, folks learn or thay eventually drop away. The drop-outs are probably the ones fated to that course in any event due to attitude (such as their behaviour that started all this anyway)
Lan