Try getting the warm side temps to about 93-95 and the cool side temps to about 83-84. Your humidity is good though. He may be trying to get out because he got out once and is trying to find the spot where he got out at. He may also be hungry, or may be looking for more suitable environmental conditions. Most likely warmer, more humid places. I know what heat wire you are talking about. Isn't it orangish and thin? I believe my aunt has that in her tank, even though I have tried to persuade her away from it. It's just not very safe and creates alot of unnecessary hot spots in the enclosure. Relative to a heat rock, IMHO. Snakes just really don't know when they are being burned, and it is our priority to provide them with the proper environment so things like that don't happen.

Hope everything is going ok, and you removed the heat wire out of the enclosure.