I see that the Lions have now clinched a playoff spot. The worst they can do is seven losses and the best that the third place eastern team can do is 8 losses so a crossover is guaranteed even if they lose every game the rest of the season (not likely).
However, as an Als fan I have seen what can happen if you win early and lose late. You start to go through the motions and momentum is lost in the playoffs. Just look at the BC team that squeaked into the playoffs a few years ago with a losing record and then went on to win the Grey Cup.