does anyone else think this bob dylan song is a refence to lucid dreaming?

it's the second to last verse:

Oh the foes will rise
With the sleep still in their eyes
And they'll jerk from their beds and think they're dreamin'.
But they'll pinch themselves and squeal
And know that it's for real,
The hour when the ship comes in.

http://www.youtube.com/watch?v=PuNTPSSwq5s

skip to 2:34