How do you forgive a brother who won’t stop breaking your heart? “Can they trust him?” ESPN analyst and former NHL goalie Kevin Weekes replied when I asked about Valeri Nichushkin, the Avalanche’s prodigal son. “Only he can answer that. Hopefully, they can.” Hopefully. The Avs are in trouble deep without him, limping into Game 5 of their best-of-seven playoff series with the Dallas Stars on Wednesday on a three-game losing skid while staring at a 3-1 hole. Nichushkin, Colorado’s mercurial winger, was suspended by the NHL for six months for violating Stage 2 of the Player Assistance Program before Game 4 at Ball Arena.