We sort of all knew that the time would come to part company with Big Papi at some point but I think we all hoped he'd hold on a bit longer than this.
While I want to stay loyal to a guy who carried us to both of our recent championships, I just don't see him getting his stroke back at this point. He's had most of a season of relative health and while he's shown some flashes of the old Papi, flashes are exactly what they've been. His eye has been fine, his isolated power is fine, but there just isn't enough pitchers in this league that he can catch up with any more for us to see more than a shadow of the Big Papi of old.
While you want to show patience in the guy, none of us are masochists and the first and most important question for any manager or GM is what you need to do to allow the team to win baseball games. Getting a .700 OPS out of the DH spot isn't doing this.
David Ortiz is owed 12.5 million for next year. This is salary that is not going to be cleared. There is no one who will take one such as he on at that money. There is no point in paying him that money to sit on the bench -- and he doesn't provide anything resembling the defensive flexibility required of a bench player anyway. If he isn't effective enough to be a productive offensive player there just is no point to Big Papi.
In short, if he doesn't turn it around, his salary becomes a sunk cost much like Lugo's and the better course of action may well be to move on past him and cycle Lowell, Martinez and others into the DH spot as needed.