Atmasphere, please correct me if I am wrong. There is a couch in between the speakers. If he pushes the speakers closer to the wall, that means more of the couch is in front of the speaker. Will that not mess with the imaging?You'd have to try it but there's a good chance it won't hurt at all and may even help.
That is assuming that the couch is soft. If so, it can reduce diffraction issues between the speakers, and since the high frequency drivers are horns, this should work out quite well.
IOW its worth a shot to simply push the speakers back.