Hello,
First, stop the force feeding. Second, get the enclosure adjusted. Something is very wrong with the environment assuming the snake is in fairly good health.
From the way you descibed your cage, I think there are some easy things you can do. I wouldn't be worried about him being too cold, I think he's too hot. Your low temp is the highest I would go. I think you need to drop both ends 4 to 6 degrees. Misting as frequently as you are shouldn't be needed. Lowering the temps will help, and using a moisture holding substrate will improve that aspect a bunch. If you are already using something like repti-back, mulch, or the coconut stuff pouring water on it or soaking it a bit in water will help. Just don't make it so wet there is any standing water on the bottom. If your BRB is never staying on top of the heat pad it, it's too hot! Most of the brands of heat pads get very hot and need to have a rheostat or thermostat to keep them in a proper range. The heat emitter dries the cage pretty quickly and should also be connected to one of the aforementioned controllers. If you are using a glass tank, almost all the screen top will need to be covered with something to prevent the humidity escaping. Remember, the smaller the cage the harder it will be to have even a small temp gradient and the less forgiving they are for errors. Give him a hide on both sides with a bowl of water large enough for him to soak in.
Don't even try to feed him again until the environment is adjusted and stable for a week. I wouldn't even touch him for a week. Make sure he is in a quiet location. He is very stressed at this point and needs to acclimate to his new changes.
I believe he will eat when he is acclimated to the changes. I am sorry if this sounded rude, it was not meant to be. There are alot of good folks on this forum, and we can help you get your little guy going in the right direction. Take a look at Jeff's care sheet (click sonsor link jcsnakes) above.
When your enclosure is adjusted we can work on feeding.
Linda
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"There is a principle which is a bar against all information, which is proof against all arguments and which cannot fail to keep a man in everlasting ignorance- that principle is contempt prior to investigation." Herbert Spencer