"Free your mind and your ass will follow" -Bono Subversio Vox

I'm sure some never got the reference to Bono's (punch)line in this 1994  acceptance speech. I had to google it myself..
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It's from the 1971 Funkadelic song  by the same name:

Free your mind and your ass will follow:

The kingdom of heaven is within
Open up your funky mind and you can fly
 Free your mind and your ass will follow
 The kingdom of heaven is within

How would you interpret Bono's  use of that line in the context of the speech?
Funny the post on SongMeanings suggest the meaning is obvious (:
It can't be (just) a throwaway chance to use "colorful" language..
It's always about subversio..and always prayer to Bono Vox.
Achtung, Sitz Im Leben, Baby!
Get on your boots..