How to kill qemu without losing (paused) VM?

[Neil Bird]

I admit I may be missing something obvious, I'm new to this VM malarkey. 
  On my F10 running the VM manager (which I'd earlier failed to get working 
but I think burst into life when I manually loaded the qemu kmdl):

I can pause the VMs OK, an come back to them later, but the qemu process 
is still running, taking up RAM and seemingly eating a little CPU.

Is it not possible to somehow shut the qemu process down on a paused VM 
for later restart?  'Disconnecting' seemed to only apply to the VM manager, 
and still left the qemus running.