Ahhh, no. I don't have to use "aiki" to experience "ju". Using your example, I am using the "ju" principle from beginning to end.
If that is what "aiki" is (putting that little extra force behind my technique) then the discussions on this board for the past 8 years have been a waste of time. You just defined it.
In my opinion, "Aiki" is not about "putting that little extra force behind my technique". That experience would be "Ju".
"Aiki" principles help in the experience of "Ju".