Sentimental: check.
Reality: I hope there would be a good reason for Bagwell to DH.
Bagwell has a better eye, but will he be rusty?
I really want to believe Bagwell will go in there and get some solid hits or draw walks, but is he ready? I guess the best way to know is to see if Garner puts him in there. If he does, they think he is ready. I haven't seen Scrap Iron do anything sentimental in the playoffs, yet, and I don't think he will.
Other things crossing my mind: What circumstances would lose you your DH for a game?
With Bagwell DHing, we can have both him AND Lamb in the lineup at the same time. Bagwell isn't going to play the field (duh), and having his bat, if ready, in the lienup all the time is probably better that not having it in the lineup, PHing him, and then using another player have to cvome in to replace him again in the field.
Like I said, I think if Garner puts him in the DH, Bagwell has shown him he is ready to contribute and he think it leaves his best options still open.