I wrote to Pellon. They said they've not made any changes and think I must have gotten a defective roll. They're sending me a Fed Ex label and a new bolt. Yay!
I have a theory that the glue didn't get sprayed on this bolt as much as before. I have no idea if that's what it is or not, but like I had said, it's floppy, not stiff at all. I knew as soon as I touched it, it was different.