One hinge has come out of place and I's like to remove the whole door to replace it. Can't get the other hinge off. Not a simple clip or anything else simple.
On Youtube there are several videos showing how to mess with drop down oven doors - search around - there's only a few different types - yours will be bound to be shown.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix gas cookers.