I think it's the fear of sitting 5.5 mil. It just ain't gonna happen. That kind of money has to be justified...and he will play.
I see your point, and agree with you, but the other end of this is that Dan is a known liability on this team defensively at this point. Clendening has been better than both him and and Staal... There's been enough time for this management team (not just AV) to realize that there is no hope left in that Girardi contract. This team is good, sit Dan down and tell him "Dan, you've had all year, your play is not up to par, you are going to get your minutes reduced."
There's a point when you need to cut your losses. Dan is a loss, suck it up, sit him, and move on from him this offseason. It's not like playing him makes anything better, and Dan knows how bad he's been--you think giving him chance after chance is going to result in a change in play? Are we really hoping for that 1 good game out of 10 bad ones for Dan? Because that's a pathetic viewpoint