While the sock/shirt trick works with dogs it doesn't do anything with snakes.
I wouldn't be worried at all, at this point he is just scared and needing to be left alone for at least a week so he can settle into his new house. (I would also suggest that you wait to try and feed him until then as well)
I see that you are using aspen, but what is the other substrate in there? I would be worried about the aspen molding.
I would also move the heat lamp directly over the hide. you need to get the hot side up to at least 88 degrees, (88-92 is the ideal range for the hot side, 78-82 degrees is ideal for the cool side. What type of bulb are you using? (white, red, blue, backlight?)
You also should really have a second hide on the cool side. this lets them thermoregulate while still being able to hide.
Here is the care sheet. I suggest that you read it: http://ball-pythons.net/forums/showt...ius)-Caresheet