I'm currently at work and I'm having a little panic attack.

I followed a recipe that require the ribs to be wrapped in foil and cooked at 180F for 9hours.  I left about 30 minutes ago and for who knows why I didn't think it could be a bad idea before, but now I'm feeling unsure and worried.

The ribs are wrapped in two layers of aluminium sitting on a baking sheet.  The ribs were coated since last night in a dry rub and I've added sauce on them this morning before closing the wrapping again.

Please give me your thought.