Damn, 90 feet is no joke. That bag shot up with your whole basket and you just watched it go? I'd have been screaming underwater, probably would have swallowed half my regulator. That seam tearing at depth is my worst nightmare, I always picture it happening right when I'm not looking. And yeah, dump valves sticking is a whole other beast, had one freeze on me once in cold water and I thought I was gonna have to cut the whole rig loose. New gear might cost more, but getting your basket back without a fight is worth every penny.