The truth is Simmons didn't show a whole lot of explosiveness during his time in Miami, and the emergence of youngsters like Robert Baker and Albert Johnson basically sealed his fate.
"The competition is tough," said Coach Dave Wannstedt. "You can only keep so many guys."
The other players released on Sunday were DT James Atkins, RB Marlon Barnes, WR Ronney Daniels, WR Margin Hooks, QB Zak Kustok, T Corey Mitchell, P Casey Roussel, WR Sulecio Sanford, LB Justin Seaverns and LB Shannon Wadley.
The release of Kustok hardly was surprising after the acquisition of second-year quarterback Sage Rosenfels in a trade with Washington on Thursday.
The moves left the Dolphins with 71 players on their roster. They have to get down to 68 by Tuesday — the limit is 65, but players who compete in NFL Europe in the spring have roster exemptions.
The three Dolphins players who fit that category are LB Scott Shields, LB Kevin Rollins and CB Cedric Donaldson.
That means the Dolphins have three more moves to make. One of them will be putting tackle Brent Smith on injured reserve. He tore his right ACL in the game at Houston on Saturday night and has been lost for the season.