Safe to buy food baked in plastic containers: I recently bought some baked goods (corn break I think) from Fred Meyers, and it seesm to be baked right in the plastic container it came in.

Is this safe?

This question makes it seems like this is unsafe?
How dangerous is it to bake food with plastic?
There are plastic oven bags like this

Source http://lamiacucina.wordpress.com/2014/02/20/saumon-en-papillote-au-citron-vert-lachs-in-folie/
that can be used at temperatures at least up to 200°C. I am sure that there should be equivalent baking pans with similar properties for baking goods.
In conclusion, referring to your link to another question: It depends on whether the plastic is supposed to be baked or not. The questioner of the other thread said he had forgotton to remove a piece of plastic that he had been supposed to. In your case: It is very likely safe.