Yes, it is possible to turn off auto recover saving in Excel 2007. Here are the steps to do it:

1. Open Excel 2007 and click on the Office button in the top left corner.
2. Click on the Excel Options button at the bottom of the menu.
3. In the Excel Options window, click on the Save tab.
4. Under the Save workbooks section, uncheck the box next to "Save AutoRecover information every X minutes."
5. Click OK to save the changes.

That's it! Auto recover saving is now turned off in Excel 2007. Keep in mind that this means you will not be able to recover unsaved work in case of a power outage or other unexpected event, so be sure to save your work regularly.