it could be, but i dont think so. Im not sure if i explained it very well to start. It almost sounds like left hand damping, which sorta then turns into a kinda high pitched roar. to start i guessed it was jus moving the chord up and downa few frets, but it sounds too dam good. anyone whos listened to the intro on 86 will know wot i mean (i hope).

I really dont have much clue about wot im talkin about when it comes to these little tricks!