You can always plug your phone in to pc. Copy EVERYTHING in a folder. Both sdcard and external sdcard. Than format internal sdcard in cwm/twrp. You would have to reinstall your apps. But it will allow you to pick and chose.
*So far as the theories of mathematics are about reality, they are not certain; so far as they are certain, they are not about reality.
*Do not worry about your difficulties in mathematics, I assure you that mine are greater. - Albert Einstein (1879-1955)