i read the post you had in the general section about selling your hemi car, then the guy whining about stuff to get money back, including the headliner bow being upside down.
if that were truly the case, the headliner would be bagging down severely at that bow.
having installed several headliners over the years, i can't begin to imagine how this could be possible without ripping the listing sleeve from the headliner and causing damage.
this could happen during installation of the headliner, but once installed with the bows positioned as they should be, it would be real hard to do without damaging the headliner.
just my experience. your mileage will vary.