Use this code to access single player menu in multiplayer:
D00A5060 0001
80403FF7 0001
D00A5060 0000
80403FF7 0000
D0403FF7 0001
800A4FC4 0001
D0105304 0010
800A4FC4 0000
D00A4FC4 0001
800A325D 000?
D00A4FC4 0000
800A325D 0001
Where ? is the number of players co-op'ing
