while modelling in ploygon mode i often check how it will look when smothed (not sub-d) and then just undo get back back to my modelling mode. But unfortunatly I accidentally saved it as a smoothed mesh. How do i get it back to its basic poly mode? Is it posible to use my construction history as I have history on. Please help as I dont want to have to start my model from scratch.

Thanks.