They didn't give me any hassle about the unlock code. I just told them I would be travelling for work and needed to unlock it.
I'm still trying to find a way to get to the hidden menu now. I was able to access it on stock Gingerbread, but can't get to it with CM9 RC1. Any ideas?
Do you think it's possible for CM9 to get that function? Or is it easy enough to go back to gingerbread and unlock, then flash CM9 again?