So you didn't think the YG's lacked a solid center image due to their super wide spacing?
All I heard were two seperate speakers playing in the ends of the room. As messed up as that positioning was, I still felt the sound was OK but not as good as it could of been. But they were most likely thinking that since seating was 6 across, they wanted to spread the speakers out.
The Scanspeaks they are using are excellent and I use one of their current mids in my own design. They have the right idea IMHO, passive sat and active subs are the only way to go to get a speaker to integrate properly into any given room.