Quote: Kevin Murphy @ January 16 2012, 5:53 PM GMTat around the same time as somebody threw a corpse out of a lower-floor window (or the truck, I guess) which is what we see hit the ground.
Now here is the weird bit. If Sherlock was able to launch himself off a building and land in a bin truck without being seen (except by Watson), then what drew the vast crowd to 'Sherlock's' body on the ground?
I suppose you could theorise that the sound of Sherlock hitting the bin lorry might have drawn them, but rubbish trucks make loads of noise anyway and London is a very loud city.
So the timing had to be - Sherlock jumps, no one sees, Sherlock hits bin lorry, no one sees, corpse is pushed out onto street, no one sees, the sound of Sherlock hitting bin lorry attracts attention of passers by.