I tried the mod out once and it messed up my save file. Using spells I haven't got in the game yet adds them to the progression stats seen at the end of the game.

Picking up a wand with the divide-by-10 spell on it caused my achievement pillars to activate an achievement that I didn't get.

Using the Alpha spell on a wand caused the greek letters to become unlocked and I found Mu in a chest in a subsequent run.

Any way to fix without deleting my save file?