Toccata from Widor's Fifth Symphony

I am going to catch flack for this rendition but let me 'splain.  When I was 16 and had been playing for only two years, I was asked to play this piece for a wedding.  I didn't have time to learn it as my reading skills were poor and it was over 16 pages long.  I reduced it to a lead sheet and faked it.  I call it my "Widor's 4.5."  I've been playing off the same lead sheet ever since and because I only do this piece for postludes and recessionals, I never took the time to look again at the real music.  Every time I play this piece, people get up and walk out.  Hey, where's everybody going?