Can… but not SHOULD.
The manual expressly warns you against moving the head and gantry manually, because motor = generator, and forced motion on the motors puts charge on your control board where it shouldn’t be.
Also, since it is a manual move, you will abandon all accuracy by doing such a thing, including camera accuracy. So unless you are wanting to cut in the physically possible but programmed out of bounds region (and are willing to risk warranty voiding damage to do so, and abandon all precision of placement), there is no reason to want to do such a thing.