There are two low notes with a finger vibrato where I pull them up and out of tune just a bit and then wiggle the note.
That may be what you are talking about.
If so, that's on purpose.
It's at :39 and :41 and happens again later in the tune.
Satch does that also on the tune and I thought it was pretty cool sounding.
Chances are it may have been me just out of tune though. :o
Super, all the effects you hear are done with Guitar Rig2.
There are so many cool effects in Guitar rig2.
I can pull off synth sounding stuff no problem with just the guitar.
All the camel burping noises and weird stuff I do is with guitar rig and a guitar.
I use all kinds of goofy effects in the background of my stuff to add interest. It's a ton o fun to play with the guitar gig effects.