DENVER — It’s a mountain-bound battle between those who want to whoosh and those who want to shred.A group of snowboarders argued last week for the right to rip down the slopes of a Utah ski resort. Federal judges from the 10th U.S. Circuit Court of Appeals in Denver are facing an icy culture clash between the boarders and Alta Ski Area, which wants to keep its runs reserved for skiers.The four snowboarders, who say the ban is based on incorrect stereotypes that cast them as reckless and inconsiderate, appealed …