This article is from the Disney's Haunted Mansion FAQ, by Don Bertino bertino@netcom.com with numerous contributions by others.
Yes. More specifically, there was a "Hat Box Ghost." But he didn't last
very long. Here's how the attic scene was to work: after making the right
turn in the attic, the bride would appear on the left. Then you would see
the groom (the Hat Box Ghost) on the right, holding a hat box. (He was
located in the exact position that the bride is now.) The groom's head
would slowly disappear, then reappear inside the hat box. Then the cycle
would reverse. This effect was achieved much the same way as the
ballroom ghosts, using reflective glass. Apparently, the effect didn't
work well in this location, so the figure was removed and the bride
repositioned in its place.
 
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