I thought it was simple to intuit. Throwing cappy can be done by flicking a controller, right? Flicking the controller again does the homing thing, right? So do the same thing with buttons (hit the button to throw it twice). Of course it doesn't work if there is no enemy close enough...
Same thing for rolling. Just keep hitting Y. I guess I have to try motion controls to see if shaking makes you roll faster than repeatedly tapping Y.
Bottom line, I wouldn't think there would be an option to disable motion controls without contingencies built-in.
Edit: Maybe I should wait until I get home from work so I can actually do it a few times. My memory isn't what it used to be.