Here's an interview Walker did with Baseball Beginnings in late March. Some clips...
Baseball Beginnings: Do you feel more comfortable pitching now or do you feel like you’re still growing into it?
Walker: Yeah. I’m not real confidant with it yet. I feel like I’m still learning.
Baseball Beginnings: So you get to be that one lucky guy who gets to learn how to pitch in front of 20 radar guns a day.
Walker: Yeah. It’s new to me to have that many scouts so close to me. I try to block it out when I pitch and just try to be myself.
Baseball Beginnings: That bullpen back there, you threw two curveballs. The first one was good, the second one was really good. Is that something you’ve been able to bring into a game yet?
Walker: Thank you, and not yet.
Baseball Beginnings: Do you feel like a fish out of water sometimes, where you’ve come up all the way in one sport and then you’re playing with guys who have come up playing another?
Walker: Kind of. I just want to throw more strikes. I walk a lot of people sometimes. I want to be comfortable. I want to find a comfortable spot and throw a lot of strikes. I’m not as comfortable as I was in the Fall just yet. I had a lot of confidence in the fall.
These types of responses don't really seem reflective for me of the T.O. personality type or even a guy who thinks he's the biggest boss in town. Now, I know that there are certain ballplayers who have the Jekyll and Hyde effect going on, who are humble in interviews and downright nasty to their teammates, but the responses we've seen out of his coaches describe him as a quiet type of guy whom his teammates gravitated towards as a leader.
My guess? It's been stated elsewhere that Walker comes from a bit of a troubled home life. The father moved out and is now in Texas, the mother is doing what she can to raise three children. You might expect that this could lead to a chip on the shoulder as it has with a number of guys, but you also might see it manifest in him trying to fit in with his peers by acting harder than he really is, quoting rap lyrics, and boasting about his own accomplishments over MySpace, all of which seem out of tune with what the coach is saying.
I'm not looking to claim that Walker is a saint in disguise, because it's certainly possible that the MySpace is the true indicator of who he is and how he views himself, but it's not the only indicator we have, and everything else makes that one source look a little odd.