I think that is what makes him so frustrating to watch as a fan. He is capable of doing the job the team needs, but he just for whatever reason refuses to do so. I have to think this season is his last chance with the club, it's up to him whether he is an astro in 2008 or not.
Which may be right around the trading deadline too. Think of it this way:
Astros move Burke to 2nd base, make him leadoff. So now they need a CF.
Astros move Loretta to 3rd base, let him bat second. So now they need a middle of the lineup hitter.
Hmmmm... a CF that hits in the middle of the lineup.... hmmmm. Doable? Yes, at the trading deadline, one might possibly show up. It's not entirely MoBerg that needs to perform mind you, but the fix to a lineup that is not working sometimes goes this way. One adjustment leads to another and another and before you know it, you're expendable because you've showed you are nothing more than a glorified #2 hitter and there is already a guy on the team that plays your position that can do that better than you.