I don't think the insistence on the requirement of 'hard disconnect' is reasonable. Per the brain as transceiver analogy, you are jiggling a part and may get 'static' while you are doing it. Stop the jiggling and static stops. Jiggle too hard and the part disconnects from its socket (knock them out /g) and you'll have the desired disconnect from the "World of Warcraft".
p.s. Realized I didn't address your "subjectively". This is true, since the radio analogy was to address the analog of neuroscientists examining people with damaged brains. You want to know what the 'radio' feels :)
So this is in fact an interesting aspect you bring in. The answer to this is: this seems to conflate 'ego' and 'self'. This is a different problem: Is the self the same as the ego? My own view on this is that is the ego is not the true self.
I must admit I've never been hit so hard that I am 100% knocked out, so I can't really speak as to the subjective experience of being knocked out (from the non-physical consciousness perspective, not the brain)... but surely it isn't like disconnecting from World of Warcraft?
That said, if the injury is serious enough I suppose it might trigger some Near Death Experience where people have reported seeing things purportedly on the other side.
So I guess that answers my original concern.
(I think you might have confused my question though, or perhaps I've confused you. No worries, my questions are answered anyway.)