maybe you could create a team and turn off the salary cap and just put both pro bowl rosters together yourself. i dont even know if that stuff is an option in madden anymore as they inexplicably take stuff out of the game from time to time.
I don't think they have had this on Madden since like '05... not sure though. If anything you can just sim a season and play the Pro Bowl. The roster will probably be close to the real one.