A question I get asked frequently is how to take a document that has been created as a facing pages document in InDesign, and change it to a single-page, non-facing pages document without messing up master page items. This is needed in some prepress workflows where objects bleed into the gutter (the left side of right-hand pages or the right side of left-hand pages).
Here is one way to do this:
1. Open a document that has been created as a facing pages document.
2. In the pages panel menu, choose Allow Document Pages to Shuffle (CS3) or Allow Pages to Shuffle (CS2) (this should uncheck, or deselect this option).
3. Grab the right-hand page of each spread, and pull the page to the right of the spread until you see a vertical black bar appear and then release the mouse. This will separate the page from the spread, but the page will remain a right-hand page.