While undergoing an MRI on his back in the summer of 2000, a series of tests determined that there were tumors in his chest and near his kidneys.
In 2003, he played for the Barcelona Dragons of NFL Europe and signed with the San Francisco 49ers but again did not make the roster.
Presently, he is the head defensive coordinator and quarterbacks coach at Laguna Creek High School, in Elk Grove, CA.
Simmons helped their then starting running back, Don Jackson to lead the section and division in rushing yards in the 2010 season.
Before the end of the season, he was leading the state in yards, and was number 4 in the nation, before Laguna failed to make the playoffs.