Why the hell announce a starting lineup that he says is the starters going into camp, in other words the incumbents who will start unless their job is taken, and include a guy who 10 days ago was openly saying he wasn't the starter, didn't deserve to be the starter, and was fine with that?
The lineup announcement is a type of motivational tool, a coaching style that lets all players know EXACTLY where they stand at all times. For those injured, you better rehab and get back in shape. For Shipp, whatever the reason, you better correct it if you want to start.
It clearly said that the lineup was going INTO training camp and anyone else would have to beat a starter out.
As far as Emmitt's comments from 10 days ago, Green asks his players to accept certain roles. He likely told Emmitt that he would tell everyone and anyone who asked that Shipp was #1 and Emmitt was #2, as a tone setting, motivational ploy. At the end of the day, he'll play the guy who he'll win with.
And that's also my point about S King. He's given McCown the first shot, but is very prepared to let King start if McCown doesn't get it done. And so it goes with every position.