It is my understanding that a Copper Mtn. lift ticket gets you access to the lifts, nothing more. If one is so inclined to hike up the slopes and ski down them during the ski season, that is perfectly acceptable and legal. People snow shoe at Copper during the ski season with no problem.
"So I was sitting in my cubicle today, and I realized, ever since I started working, every single day of my life has been worse than the day before it. So that means that every single day that you see me, that's on the worst day of my life."
--Peter Gibbons (Office Space)