Yes! [home] should do it! However... you know how [alt]+[ctrl]+[shift]+[Left Mouse button] rotates the canvas?! Use the right mouse button to reset the rotation.
But it'll all get better, I promise, haha!
Thanks for the video...watching it right now...

...how can you keep doing that?!

Also, there's not really a centrifugal force at work, but your brush impulse goes in circles then, of course, which can make it appear that way.
I think, once the spirit hits me, I may do a bunch of wacked out stuff such as this and being able to tilt the canvas for fluid motions...but that spirit is still on the rise somewhere, hehe... gotta deal with other things first!

Anyway... cool clip!
