I believe this is like the change up my DD throws. To be honest I’m not really sure because she came up with it on her own after watching a bunch of YouTube videos and experimenting. She makes a circle with index and thumb and tries to “throw the circle” to the catcher she says. Her spin on it is 12-6 like her fastball. Is that how the horseshoe spins or is it reverse like the flip change?
Horse shoe- grip with the thumb and index on the outside the horse shoe looking seam.,push it and let it drop out.
The one most of my pitchers throw- grip it just like your fastball and get the back off your hand to the catcher. Let your hand die at your back hip. Very easy if already throwing the flip.