To eliminate the threat and protect the escape plan, Michael purposefully removes a linchpin from the escape tunnel's support structure. When Sammy enters to investigate, the tunnel collapses, burying him alive. This is notably the first time Michael directly causes a character's death.
T-Bag manipulates a desperate Bellick into challenging Sammy to a fight, using a "chicken foot" to initiate the combat. Bellick relies on an acetone-soaked wrap trick he learned previously, but he nearly dies when his supply runs out. Watch Prison Break s03x10
This episode continues Bellick's "downward spiral" as a pathetic figure at the bottom of the prison hierarchy, forced into life-or-death fights just to survive. Impact on the Season To eliminate the threat and protect the escape