Ok after taking the advice of matt710 I attempted to use the unlock all code and frankly had a hell of a time with it. I have a logitech gamepad and I got the code off Gamefaqs.com in the PS2 section for XMLII. Just to make sure I'm not barking up the wrong tree, the unlock all code is:
Right, Left, Left, Right, Up, Up, Up, Start at the team management screen. Just wanted to make sure I'm at least trying to do it right.