I'm coming at this from another direction. Is being hospitalized such a bad thing? Your illness is bad enough that you recognise you do need help - which is a good thing. If being an inpatient is a bad thing try demonstrating to them why. Make a plan regarding what you think you should say. Explain why being an inpatient won't work for you. Maybe it's the responsibilities you have (I'm guessing). I think the only reason they would keep you is because you are thinking of hurting yourself or are experiencing psychotic thoughts. You came across in your post as being level headed.