You know, I didn't flip the overhead. It never even dawned on me because I've never dealt with a project where the tracking engineer messed up that badly. The overheads and rooms sounded awkward to the point of being near useless, so I just got them out of the way fast and tried to bury them under the acoustics. Noticed all sorts of weird artefacts in there, and not sure where half of them came from.
It's all sleight of hand anyway. When you have poor bass and drum tracks, you highlight the vocals and guitars in an attempt to mask them.