kwin makes GUI unresponsive and blocks half the screen.[Urgent]

[Jeroen Mathon]

Hey,

I filed a bug report earlier but wanted to know if anyone else is also 
experience this urgent issue.

As detailed here: https://bugzilla.redhat.com/show_bug.cgi?id=1430660

My workstation has almost become unusable now with kwin blocking half of my 
screen and refusing to work.

See: http://i.imgur.com/un69XnR.jpg

I cannot use the gui and restarting kwin also does not work, the screen 
remains unusable.