The likley answer is no but can the shuttle use navigator to change a forward movement to the 0 stop?

No, the stop maneuver is a different bearing. Sorry.

Now, if you had the stop maneuver of different speeds, you could change between them, but that's just silly.

Lol. That's what I thought. I was just trying a variation of your ORS/APL build but on our beloved alabaster star swine