You can always try to reglue the seam with weld-on 4 and a syringe: https://www.amazon.com/Weld-Acrylic-Adhesive-Applicator-Bottle/dp/B0096TWKCW
It's likely that the seam has salt/particles now, but you can rinse it out, dry it, clamp it, apply the weld-on 4, then put a bead of weld on 16 on...