Yesterday at Randwick I witnessed a rider actually "putting the stops " on his mount in the run to the line in a busy finish!
Look at your photo-finishes as he was "caught" showing no inclination to finish amongst the place-getters. His legs are outstretched in the irons and no-one can tell me this was for no other purpose than to "apply the brakes."
It was a "Quaddie" race so perhaps this explains things.
Go figure...!