Well, I'm not sure if all those hidden tunes are really intentional or, as it was said before, are a matter of coincidence. I agree with TOL that it was full of musical references and MK intentionally played those licks from 60' but it is quite natural that different themes appear here and there during improvisations in live versions. We have to keep in mind that many licks will sound familiar or similar to something else but I doubt MK intends to play them as a reference to a particular song or theme. A lot of times it is subconcious and unintentional.
BTW, did you notice that live intro to Romeo And Juliet is the same "Stop In The Name Of Love" theme? Intentional or coincidence?