I had this brilliant idea to put aluminum foil at the bottom of my oven while I cooked pizza at very high temperatures. I was hoping it would catch any toppings that fell off so I could quickly remove them and prevent smoke. The result is that the foil bonded to the oven and now I'm not sure how to get it off. Any chemicals or tools I should use in this situation?  
Unfortunately I can't post my pictures. But I recently did exactly what he did here and with worse consequences of foil. After reading everyone's post on several web sites, I tried the Heavy Duty Easy Off Oven Cleaner. After 4 applications and scraping with a "decal razor" scraper, I got nearly 97% of the foil off. I let the solution sit for an hour on each application.  I was able to take the oven plate out of my oven and do this outside of the house. 