"especially repurposing a professional race track for amateurs to ride in a racing fashion.”"

This means to me, ride "like" a racer, and don't wreck, by not driving beyond your skill or bikes level, and if you do wreck, don't blame gravity, the ground or the sun, or a track were real racers do just fine racing every event.

The insurance impact as already mentioned ,would be huge if this goes south for the track. Sadly, the insurance company will likely settle for the policy limits, and move on, with all the ramifications that means, as they can now point to this case to justify an annual 10x policy rate increase, with a take it or leave attitude.