No problem, digitalvoid, the risk is part of the deal when using the devel repositories. I was just a little naive regarding the potential consequences. Please don't let it keep you from developing more great apps! :-)

12345 was indeed the code that unlocked the phone. As you can image I kinda freaked out when this happened, so I did reboot the phone, even took the battery out. Is there something like undelete for linux, so that I can try to recover these files?

Not sure what the version was, but I downloaded the app a couple of days ago with the app manager using one of the devel or extras catalogs, so it was probably the latest.