Or is it just an intersection of coincidence & symbolism?
http://moviepilot.com/stories/839506-is-man-of-steel-paying-homage-to-christopher-reeve
At one level its symbolism & coincidence, but at a more perceptive level its synchronicity, indeed.
http://syncnotes.blogspot.ca/2010/06/superman-ii-and-twin-towers-etc.html,
http://screencrush.com/man-of-steel-christopher-reeve,
http://sciencefiction.com/2013/06/28/did-christopher-reeve-make-a-cameo-in-man-of-steel
http://en.wikipedia.org/wiki/Man_of_Steel_(film)#Plot
http://screenrant.com/zack-snyder-superman-man-of-steel-reboot-sandy-106351,
http://www.digitalspy.ca/movies/at-the-movies/a473917/man-of-steel-trailers-10-best-bits-scene-by-scene-pictures.html
http://www.blastr.com/2013-6-27/did-snyder-sneak-christopher-reeve-cameo-man-steel,
http://www.uproxx.com/gammasquad/2013/06/man-of-steel-was-christopher-reeve-subtly-cgid-into-a-scene
http://comicbook.com/blog/2013/06/10/man-of-steel-review-the-best-comic-book-movie-ever-made,
http://www.denofgeek.com/movies/superman/26048/the-easter-eggs-hidden-in-man-of-steel
http://www.movieweb.com/news/man-of-steel-2-coming-in-2014-with-justice-league-to-arrive-in-2015