At first I folded mine down (forward) and I never had it move an inch. I decided to remove it all together because I never have a rear seat passenger and like having that huge area to put stuff. I use the seat in my garage so it's still has a purpose.
MSgt USMC (Ret)
2013 Rubicon 2 dr, Commando Green
2002 Harley Davidson FXST Softail, Vivid Black
2007 Harley Davidson FLHX Street Glide, Midnight Pearl