Maybe an annotation could help that clearly states the following:
The number communicated to the players on the pitch should always be the number that will be said next, once the disc is live again.
Meaning after an accepted foul by the defense, the marker should communicate “The disc is coming in on 1” and not “0”. After an contested stall out call, the marker should say “The disc is coming in on 8. Disc is in. Stalling 8, 9, 10.”
And then goes through similar examples.
But I also like Aren’s suggestion of “Resume the stall count by saying “stalling” followed by the next number, or [n], whichever is lower.”