I was vacuuming up so I didn't track drywall all over the place and noticed this. The floor drops in the corner almost 1/2 inch. Looks like I'm pulling this base off to see what's up with the flooring. [Edit] Turns out there was a nail I didn't catch right at the floor about 4 or 5 feet to the left. Pried it out and the baseboard dropped right down.