Yeap, I've encountered that type of problem on a Touch while out for a day. The problem is frustrating to say the least because both the registration and books have to be reloaded. No Internet. No computer access. The thing is a brick.
That was in the middle of a busy city.
I'm not sure if this will work on a Glo, but you can insert a fake registration by following these instructions:
http://ccoffing.net/tech/embedded/kobo/#activating
Yet that still requires a computer with sqlite3.