won't release screen

[whitis]

Binary package hint: swfdec-mozilla

http://www.dailymotion.com/huntforgollum

Click play on the main video.

Now, click on the fullscreen popout icon.

It now takes over the full screen, as expected.
A message appears that the site doesn't allow full screen.
Then, instead of popping back into firefox, you still have the full screen plus a smaller firefox embedded size window in the upper left corner of the screen.
You are completely trapped, unless:
  - Console switching and killall firefox will probably work.
  - On a dual monitor system, put the cursor over the other monitor, roll the scroll wheel so compiz will
    scroll to a new workspace, open a terminal, and kill firefox.
  - ssh in from another machine, kill firefox.
Either way, you lose any posts you were editing in firefox.

Different from but possibly related to #235666

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: nvidia
Package: swfdec-mozilla 0.8.2-1ubuntu1
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: swfdec-mozilla
Uname: Linux 2.6.28-11-generic x86_64