LG Nexus 5 Battery/CWM permission issues

I work for a device repair shop. The LG nexus 5 was turning on and off randomly, however it passed diagnostics. I personally believe it's the power button. I might disassemble the device and test the button later, however that is not my main concern. My main concern is that the CWM backup folder (hammerhead) is not a folder, it shows up in ES File Explorer as a file without an extension. I cannot rename the file, CD to it, copy it, or make any changes outside of recovery to it. I had issues with the recovery image being overwritten with the stock image on reboot, however I managed to root the device and make the recovery image stay persistent. I need to pull of the immutable CWM folder. I have tried ADB, tried changing R/W, changing permissions, but even when I try that it says "cannot chmod: permission denied", even when running as root. What can I do to get this file off? It contains raw data dumped onto the SDcard, which is vital for the shop (I might lose my job). I try to mount /sdcard for USB storage, but CWM won't allow it.