It's January 1 - 12:59am and I'm a T-Mobile Customer

[Dreading]

Apparently my Diamond has a time machine function and carrier changer function that I didn't even know about - help!

I running Juicy 2.5. I downloaded the Purple/Black theme from: http://forum.xda-developers.com/showthread.php?t=436867 and www.thetouchblog.com. It worked just fine until I ran the Background4allpages cab. Now, when I restart, the clock flips back like mad, eventually settling on 12:59 a.m. on January 1, 2008. It also says T-Mobile instead of Sprint in the corner.

I'm really baffled - I did this same thing using the Halloween theme from the XDA link and it worked fine. I uninstalled the Background4allpages cab and its still the same deal. Can someone help? Obviously a hard reset will probably save me, and if that doesn't, a re-flash will. But I don't want to have to start all over on my configuration.

I'm trying a restore to default now. But I'd like to be able to use the Background4allpages and a custom theme, so if anyone has any ideas about what issues to look for, I'd appreciate it.