Hi there, PJ and welcome to the forum.
You may be able to do a Factory Refresh on your PE. It will wipe out all data, but that sounds like what you want. Go to Settings (either the app or hit the menu button on the home page and tap settings), then Privacy and you'll see "Factory data reset" if your Pocket eDGe is running Ermine. If you don't see Privacy in the Settings list you may be running Dingo.
Let us know!