I can't see why you couldn't back-salt out of your nps.
So whether you go A/B or STB...
Basify to pH 13
Pull with non-polar solvent (naphtha, toluene, xylene, dcm, d-limo, doesn't really matter, imo)
Salt out of non-polar solvent with FASW/FASA/FASI or vinegar
Convert salts to freebase by your chosen method (mini a/b, amor fati's work, etc.)
Re-x as desired
Fin.
Fwiw, I have never tried this, but I assume it would work just fine. Perhaps someone with real-world experience can chime in

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The OHTIn New York, we wrote the legal number on our arms in marker...To call a lawyer if we were arrested.
In Istanbul, People wrote their blood types on their arms. I hear in Egypt, They just write Their names.
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