More than a month after Sam Salter wound up in the Ramsey County jail for two nights, the 40-year-old adjunct college instructor from Hudson, Wis., is still fuming. "You feel totally helpless," he said. At the end of a New Year's Eve traffic stop on Interstate 94 in St. Paul, State Patrol Sgt. Carrie Rindal rammed Salter's 2001 Toyota Sienna van, causing $1,500 damage to his vehicle, and arrested him at gunpoint while his three children, ages 2, 3 and 6, sat in the van. His wife had to pick up the kids as he was taken to jail. Rindal...