That is a tough one, could be built that way on purpose for a rider with a long torso or something? Still that would be a cop-out move on the builders part to just change the seat tube angle, I dunno... weird for sure.

The frame and fork is definitely turned in the photo and the rear end is pointed slightly away from the photographer. If you have a frame and fork with headset sitting around you could experiment taking photos to try and get the same effect (I know I would if I was thinking about buying this bike). I presume you took the seller up on their offer for more photos?