Yeah, if they don't trade him then that's a pretty crappy move by them. And even if he requests an NL team (even an NL Central team) I hope they give it the okay. He's been great for them his entire career and he's never gotten in trouble (as far as I'm aware of) and it's not like they're playing for anything anyway.
I hope they do trade him, as long as they get a good package in return. Ff they get an offer from a team he will go to, but a better offer from a team he refuses to go to then I think it'd be in their best interest to keep him.
EDIT: I also think there might be some locker room issues in play here. Oswalt has been pretty upset with his lack of run support and he's been talking about it. I know Berkman wasn't too happy with his comments (although I question his and Carlos Lee's desire to win these days). I understand where Oswalt's coming from, but Berkman's right to be a little ticked too. I mean you look at some of Oswalt's starts, two against Lincecum, one against Jhymanz, and one against Halladay. Can you really be surprised that a poor offense isn't getting him run support against the best pitchers in all of the MLB?
Also, I have a few 2nd base eligible players too sivartus. Kelly Johnson, Ty Wigginton, Juan Uribe, and Casey Mcgehee all play 2nd and are all pretty good for me. Only thing is I'm looking for offense too, so it might be hard to work out a trade