While I'm not buying the back to old and slow and I'm still a big fan of Ray, I'd much prefer him off the bench right now.
First, this team is playing really well and beating good teams with AB starting, so I would not mess with that. While i agree he's not the shooter Ray is, he has a decent touch from 15-18 feet, cuts really well, as is an excellent defender. Starting him and Rondo together gives them an excellent defensive back court.
Second, especally with all their injuries they need someone like Ray off the bench. They really don't have a scorer off the bench and Bradley isn't that. I still see Ray getting pleanty of minutes, just off the bench. I think he'd be a great sixth man on this team.