If I remember my Philosophy 101, from your previous statement we can conclude that not being in a continuous state of stillness means that you do not know true calmness.
So, Ueshiba had not realized true calmness? or ... your previous statement needs some work, or ... you can be foul-tempered, angry and moody and still be in a continuous state of stillness.
Ha ha. Now who's talking absolutes?
I would be happy to meet someone who could remain in it for more than ten seconds let alone continuous.
It's all a matter of degrees my friend.