Hi Darius,
It happened again. This time not while resuming the VM but while swiping between full screen VMs, suddenly I was looking at OS X and no Fusion GUI running anymore. A bit of a "huh?" experience.
Of course the VMs itself were still running fine and simply starting the GUI again did reconnect to the VMs (awesome)
The logs have been send to your vmware.com email address and the problem report was send to apple.
Hope this helps,
--
Wil