The success of the player is tied to the success of the team. I agree with those above, once Colorado does good, his cards should rebound...that is if he is still with the team. But anyhow, if the team he is on does good, his value should start to turn up for the better.
It is funny how you can see this trend in the hobby year by year...Roy & Brodeur are top notch goalies, but if you track their bad years, their cards are lower than their good years. In the end when they retire, they should eventually level off, but they don't. Go figure. But the RC's do always get the love.