Source Path Too Long - Cannot Delete.

This happened when I attempted to back up all my Steam Games into one file. It crashed and now I'm stuck iwth a Folder within a Folder which as a really long name (basically about 50 names) I cannot delete the file. It's advising me to rename it which I've tired but fail miserably. I attempted to use CMD like this:

C:\Users\Name>DEL "\\?\E\Steam Backup Games"
\\?\E\Steam Backup Games\*, Are you sure (Y/N) Y

Nothing happens.. the folder is still there.

I'm pretty much stuck and I cannot remove this folder.
I also created another similar to this but the Folders are empty and the name of both the folders is called "Steam BackUp Games 2" yet i can't shift+del it...

What Can I do?