Charred Components in Rear Panel of Range

Attachment 37479 (http://www.doityourself.com/forum/attachments/electric-large-kitchen-home-appliances/37479-charred-components-rear-panel-range-download21.jpg)Hi DIY'ers- My wife was set to bake a delicious Labor Day Weekend pork roast when our 12 year old Whirlpool range, model RF386PXG, began throwing error codes. The codes, E1-F5 indicated a bad latch switch. I confirmed the issue by removing the rear cover. I'm not worried about the diagnosis. I am concerned, however, that the latch switch appears burnt, as does the oven light socket, a cable connector and several wires. I've included a picture of the damaged components. Questions: How would these devices and wires have gotten burnt? Should I be concerned about it? Is the anything to do to prevent further damage? Should I replace the damaged components? Can I simply replace the latch switch and be done with it?