I think if you press the start button at any time Progear No Arashi is in free play mode, it will stay stuck on the title screen until you hit the start button one more time.
I need to re-visit this one since a bad opcode was found in the CPU table, so with a few adjustments it should fix the "title screen bug" on the decrypt.
Who knows when i'll get do that but while i'm in there i'll have a look at free play....
Same with RT1, i had a request for freeplay on that one too (maybe this one was done already?)