I put some leftover soap in a silicone muffin pan oiled with mineral oil. After a week in the mold it went in the freezer where I promptly forgot about it. Several days later I took it out. It didn't really 'pop' out of the mold. I had to peel the pan back off the soap. It did come away nice a clean though. So is that usually how it works or is there a trick to this that I need to know?