@Freddie,
Try in mass storage mode again. That should unmount MyDocs for you and expose the directory ("folder" in Microsoft-speak) normally shadowed by mounting.

Whilst in mass storage mode, open the terminal, go to /home/user/MyDocs and move everything you find there one level up to /home/user. Alternatively delete it, but then you will need to download it again.

Once done, exit mass storage mode, check that MyDocs is mounted again, i.e. that 'ls /home/user/MyDocs' lists the contents you saw from the PC. Once confirmed, move the files you moved in step 2 back to MyDocs.