The Miami Dolphins are changing their image, their culture, and, in the process, their roster. Early in the Jon-Eric Sullivan/Jeff Hafley era, several players were abruptly released, but for others, it's a much slower process that will inevitably lead to the same ending. Chris Grier loved Austin Jackson, but it wasn't enough to keep him healthy. Jackson was a locker room leader and a guy the rest of the offensive linemen looked up to, but he couldn't stay healthy.