BackInAction

Is there some way to start over your "Career" without deleting and re-installing the app? I sort of faked my way through the 3 demo levels not knowing what I was really doing. Also, does the app crash (shutdown after the splash screen) for anyone else? Mine does it every "first time" I launch it after my iphone 4s has been idle for some time. Launching it again after it crashes works fine.