Eror deleting mailbox database folder .."The action can’t be completed because the file is open in noderunner.exe"

I deleted an exchange 2013 mailbox database from the ecp, I then proceeded to remove the dbase folder and got the error"The action can’t be completed because the file is open in noderunner.exe"

Some search on google and I found the proposed solution to"restart-service hostcontrollerservice"

this worked for a few minutes and then the folder returned again. I even tried changing the drive letter and formatting but once I return the original drive letter, the folder returns. I am running exchange 2013 CU7 so NOPE! CU1 is not a fix as I have seen in some posts.

Any idea guys?

~Richard

..forever is just a minute away*