Diplomat Select 600 Door hinge

Hello all, I am having a bit of a nightmare with my oven at the moment. Firstly the glass in the front shattered (which seems like a common problem looking at some of the comments on here), but when I was cleaning all the glass out, the oven door popped off its hinge on the left hand side, it then locked into position and for the life of me I cannot get it to unlock so that I can fix it back into the oven. The hinge is the OHINGELHA, I had a look at the replacement hinges and it is locked in exactly the same position shown in the picture. I feel a bit stupid asking this, but a couple of mates have had a look too and cannot seem to figure it out either. Can anyone help?? 🙁