Matty,
Thanks for the video, very thoughtful. However that is how I was opening the door. The previous owner left a slotted piece of (not sure of the material) in the shower. I just discovered its used to fit over the top of the door where the two pieces join and it indeed holds it in place. My door is cut to short that's why the previous owner came up with this gizmo. I took of picture it on my phone I'll have to show you when I get a chance to load it.