I think that Miami actually has a course of action planned that will hopefully improve the team, but it's all hush-hush for now. I see it as a win-win situation. If they end up with a decent young QB and some other talented players (FA or draft), they may make a run at the playoffs. If they lost their mind and end up with another 1-15 season we get a franchise QB next year.
BTW, I never cared for Marshall, so I see his trade as a great way to start cleaning house.