On March 23, 1997, Plummer was accused of fondling three women at the Tempe, Arizona night club, Club Rio. The women stated to police that Plummer reached under their skirts and down their pants while dancing with them and consuming alcohol. When one of the women objected, he allegedly kicked her in the leg. Plummer was formally charged on May 28, 1997, with felony sexual abuse. He later struck a plea bargain, received two years probation, was also fined $1,020, and ordered to perform 100 hours of community service. Plummer's off-the-field reputation remained rocky throughout his career, with much attention devoted to flipping off a fan, a loud traffic dispute, and a feud with a Denver gossip columnist. Plummer has also stirred controversy with his support of medical marijuana, which he claims to use regularly to deal with lingering post-football injuries, and hostile reaction to Jerry Jones' dismissal of NFL players with brain injuries. Plummer also started an Alzheimer's foundation, made time during his career to walk dogs at a shelter he donated $10,000 to on retirement, and developed personal connections with children affected by 9/11.