I always though it was about the rock star party life in terms of groupies in general during the LA rock scene in the 80's...

You are saying that Lita is Roxy? (I think your whole middle name theory is a bit of a stretch bty)...

Well I saw Roxie on the table
Her girlfriend down below
They'll give it to the king of swing
Before it's time to go

Although the story fits the last verse, it also fits with every other groupie during that time. If you listen to the demo version, instead of "Before it's time to go" the lyric is "something that show"

In summary, I don't think the entire song is about her. It could have sparked that lyric or verse but my interpretation is, it's just a day in a life type song.

The event happened two years after the fact and there was an album in between.