Ya know what? I think it must have been a huge coincidence as I picked the very same yarn up today (tore out what I did with it when I had my "episode" and started fresh) and worked with it a while and felt just fine. Talk about irony.
Which, I am glad to say, is a huge relief as I love the yarn and am making it into a nice blanket right now. It'll be my go to project when I feel like picking up something big that takes a while to do. Something to do in between the smaller projects.