Woah! I was planning a flash about this song too!
Ah well... I was also planning to make a flash about this song! Before I saw this flash in the portal, I was seriously nervous that this would turn out to be Maxwell's Silver Hammer... and it was... and it turned out great... and you do have a way better version than what I was planning so... congratulations on that! (sob)
I'm grateful that you explicitly followed the story in the lyrics instead of turning it to some odd double meaning crap. I've known this song a long time and I'm a Beatle fan myself and I don't think this song is symbolic. Just like "Lucy in the Sky with Diamonds", people always thought she symbolized someone or something but the song really was just about a drawing named Lucy, in the sky, with diamonds. I think this song is just it, a song about Maxwell's silver hammer and nothing more!!.. ^^