As an old saying goes with a minor edit, "It's not the get-off (fall) that hurts you. It's the sudden stop".
It really doesn't matter if you stay on the Spyder (or on/in the motorbike, snowmobile, ski-doo, wing suit, para-glider, whatever) & you have one of those 'sudden stop' events, or if you do part company with whatever and then experience either a 'sudden stop' as you meet what is effectively in the given circumstances, an immovable object (altho it's definitely gonna be worse for you if whatever you contact
IS moving even a
tiny little bit
towards you at any relative speed!) or if you just part company and end up sliding/rolling along the ground &/or road surface!
Whenever you're on the outside of any vehicle that you're riding or piloting in any way, so that
YOU are likely to be the very first living thing that comes into contact, suddenly or otherwise, with any other vehicle, building or fixtures, the scenery, the flora, or the fauna in the event of a mishap or miscalculation on anyone's behalf,
you ARE gonna hurt if any of those things happen!!
How much you get hurt and
how well you survive that hurt depends very much upon how well
you choose to protect yourself, and whatever
you choose to help keep all of your important appendages, lubricants, and components et al safely contained inside the still hopefully complete & un-ruptured skin bag that you wear all the time!

So be aware of the potential risks, and then make your choice as to how much/how well you want to be protected in the event anything meets or exceeds those risks.
Just Sayin' - and ignore the risks at your own peril!
