inbounds question- bounce

[PSidbury]

So, let me get this straight: If the thrower in-bounding the ball fumbles and the ball falls and touches floor the in-bounds, the thrower is allowed to quickly reach over line (feet staying out of bounds) and recover the ball to continue with a pass in-bounds.

Because, it was a fumble.

1) What if the thrower had stepped in-bounds to retrieve the fumble, but then steps back to intial out-of-bounds spot to make the pass?

or;

2) What if, after the thrower fumbles and the ball falls to the floor in-bounds, a defender standing there picks up the ball and dribbles away...?
And the thrower screams, "But, I fumbled it, I didn't pass it!"

Thanks,
Paul