Removing master page at runtime

Hi,          I have a page with master page developed earlier and it is working fine. Now I want the same page to be used in some other module where I don’t want the master page, only the page has to be displayed. I don’t want the code to be repeated here by creating a new page and copying the old code, instead I want to call the page and the master page has to be removed runtime.Note: I don’t want to disturb the existing page. So no code change in the existing page. Has anyone faced this kind of situation? Any help on this will be highly appreciated.