If Mystra limited the way The Weave can be used could some Sorcerer that do not rely on The Weave as their source of magic, cast higher than 9th lvl spells?

AenastFiresworn @AenastF
If Mystra limited the way The Weave can be used (Mystra's Ban on magic), theoretically, could some Sorcerer (or some other specific spellcaster) that do not rely on The Weave as their source of magic, cast higher than 9th lvl spells as they don't Weave?

— Ed Greenwood (@TheEdVerse) January 5, 2020

Yes and no.
In theory, a spellcaster that doesn’t use the Weave to work magic could elude Mystra’s Ban, BUT we wouldn’t know the ‘level’ of their spells, because arcane spells (ranked in levels) use the Weave.#Realmslore

— Ed Greenwood (@TheEdVerse) January 5, 2020