"Champioship dancers do not drop or fall. They use their knees and ankles and are constantly balanced. Are you saying they are not balanced."
They are poised and moving with care and precisely the timing they want, but like most humans in motion they are OFF BALANCE.
The reason you may not want to call it that is that being off balance in this way is such a natural and everyday part of human movement. It's DESIREABLE - wheras the minute I say OFF BALANCE, you start imagining something unintended.
This is INTENTIONAL, NECESSARY IMBALANCE - if it's happening unintentionally, or if its out of control, then you aren't just off balance, you are moving without aim.