Oh shoot, hopefully it wasn't at that temp for too long and your snakes had enough sense to move, though, they don't always. I would keep an eye on them for burns and hard spots. Hopefully they are all ok.
My suggestion is to get a dimmer from a home improvement store, sometimes Walmart carries them. It's a lamp dimmer and you can keep the temps fairly stable with it as long as your room doesn't fluctuate too much. It's a good temporary fix. You just have to remember that your dimmer does not adjust, so if your room changes temps your heat source will also change.
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