I don't have a reliable thermometer or hygrometer in my tanks since I was using the "guage like" ones. I've ordered some online and should recieve them soon. ( Look I do take advice sometimes!)
I've noticed my other snakes burrow, but the injured one doesn't like to. I'm not sure if he's just picky or if it may hurt him. I'll be changing his substrate since another user pointed out that the aspen may be looking at him.