I would pull the fuse for that one as a temporary fix.  It sounds though like your relays aren't working.
The best option...dump it and go gas.  We had one of those and frankly that oven is a nightmare.  It's old tech.  Gas is much cheaper to run and would save you a ton of money every month...even if you go propane and get a tank.
Also, we haven't scorched a shirt since going gas.