Same here.
The DISM procedure hangs. The WUSA procedure runs but only corrects the issue and uninstalls the update on 50% of the agents.
If i connect to the agent i seem to be able to run the command in the cmd prompt just fine.
Just scheduled the WUSA procedure on all the agents that got the KB installed and hope for the best.
P.S. About the filter not updating correctly we got info that it might has something to do with the fact that the update does not exist anymore since Microsoft withdrew it.
Hoping this will be corrected in some way.