Imagine a small software development team (say, 5 members). Having done your homework as an Agile manager and closely following Jurgen Appello's suggestion of "the more you empower your team, the better", you one day find your team having progressed so far that it doesn't seem to need you any more at all.
From my point of view, Jurgen's proposal: "Level 7: Delegate: You leave it entirely up to the team to deal with the matter, while you go out and have a good time." ... of going home might not be feasible, since it could have a bad impact on general team motivation when the PM just stays away.
Of course, you clearly don't want to look over everybody's shoulder all the time, micro-management a bad thing and so on. You also don't want to take away the tasks that your team members chose themselves already, right? Spending the day on farmville doesn't seem a smart move either ... so I wonder, what else to do? Should you stay with the project directly, or better move on instead?