I've purposely low sided my bike when I was about to crash when I run wide and before I hit the guard rail. Bike stopped sliding before I hit guard rail. Walked off with only scratches to me and my bike. Had I kept going I would have hit the guard rail and it would have been much worse.
If you think the fairings of your bike managed to scrub off speed in a shorter distance than your brakes and tires would have, you are seriously deluded. The reality is that you freaked out and dumped the bike because your incorrect assumption was that you couldn't stop before the guardrail.