So this morning I got up and decided to repose my Spidey, but then my heart sunk when I noticed the blue fabric had come undone from where it connects with the boot seam. After searching extensively for a fix and not finding much in the way of help, I bravely decided to attempt to remove the entire boot...and...success! The boot detaches at the seam, and it connects to the knee via a hinge joint through the leg. The blue fabric it seems is not sewn in at all. Just stuck in and held in place by the boot. So it's fixed and I am no longer worried about the seam coming undone. It was very nerve racking taking it apart, but slow and steady with no force proved to be the way. Not sure if anyone on here has had this problem or attempted this fix, but thought I'd share. Would post pics but camera is KIA.