Here's how it works.
If you have Pad1 running, and load another Pad1 (from a registration, for example), the old pad stops, and the new one starts. But if the new one does nothing, then the old one just stops. This is the result we want. So that's what Padstopper does -- nothing.
You might have to create a new multipad bank, judiciously loading Padstopper at the appropriate place, but with its help, you can do what you want.
Cheers,
Fred