Accidentally Switched Column to Checkbox in Huge Table? Learn How to Undo the Edit & Restore Your Data

Hey all, I accidentally switched one column in a huge table (30k+ records) to a checkbox, and it broke the table. Now it says "could not load, maybe it was deleted" but it wasn't deleted. I need to undo that edit so I can open my table again, as I spent $$$ enriching 30k rows.