How do I remove an app folder is OSX when all else fails? I have a folder/package in the Applications called CrashPlan.app. The uninstall failed and I am left with a folder that has a Contents folder, but aside from that, is completely empty.

The folder info: 

drwxrwxr-x@ 3 root 102 13 Jul 20:36 CrashPlan.app


I have tried the following: 

sudo rm -rf CrashPlah.app chown chflags nouchg


I tried the same things in Safe Mode and Recovery Mode. I tried disabling System Integrity Protection. Whenever I try to remove the folder I get: rm: CrashPlan.app/Contents: Operation not permitted rm: CrashPlan.app: Operation not permitted

Does anyone have any advise? I feel like I've tried everything.
I jumped a gun posting here and got the answer elsewhere.  Here is the solution:
Because uninstall has already failed, the problem may be that the "system immutable flag" is set for /Applications/CrashPlan.app or its contents. In Terminal, try 

ls -ldO /Applications/CrashPlan.app 


and 

ls -ldO /Applications/CrashPlan.app/Contents


The ls command may show something like this:

drwxrwxr-x@  3 root  102  schg   13 Jul 14 20:36 CrashPlan.app


If you see the schg flag, run these commands:

sudo chflags -R noschg /Applications/CrashPlan.app
sudo rm -fR /Applications/CrashPlan.app