Well Duh Dude!!!
You are talking about snowboarders.....an offshoot of skateboarding! Ever listen to those morons talk on the tellie or see them doing their tricks on MTV with the skateboards and bicycles......we are not talking about the cream of society here....definitely not the brightest lights in the town!
Yes....they should pickup the costs of such activities....let the insurance companies get involved on that and you will see the decrease in such incidents as the insurers impose standards in order to obtain coverage.
Still, hats off to the crew for an professional operation.