Husbandry can play a big part with what is going on as well as the fact he is going through Puberty.
Let me start with lighting. Reptiles need a UVB source. They need either a UVB bulb with would be a florescent tube Reptisun 10.0 or a compact coil which I do not suggest or a Mercury Vapor bulb which I suspect you may have. The UVB works with a daily calcium supplement to metabolize the calcium in the body to prevent Metabolic Bone Disease. This is some information on lighting: http://www.anapsid.org/uvtable.html The temps and lighting can play a major part on appetite. The temps you are giving me ar a little low and can affect the appetite as well as activity level. The Balsing area should be 105*F-110*F, the warm side in the 90's and the cool side in the mid 80's. I suggest a Digital probe thermometer which can give a more accurate reading. The stick ons can be off as much as 20* either way.
The loose bark bedding is very dangerous. It can be ingested and cause a blockage. I suggest a solid substrate like tile, cage carpet, or paper. The diet should be 50% live prey and 25% veggies. This link will give you an idea of staple foods that can be fed: fruits and Vegetables http://www.beautifuldragons.com/Nutritionframeset.html
I like to feed collard greens, mustard greens, dandelion breens, butternut squash, and various chopped berries for a treat. For prey I use crickets, silk worms, dubia roaches, phoenix worms, and goaliath worms fror treats.
The Dragon could use a soak in a 50/50 warm water and plain Pedialyte to help prevent dehydration and while in the soak gently massage the abdomen.
As far as the glass dancing, that can be resolved by putting some darl paper on the glass. That is something all dragons will do. They love to be handled, but do need 12-14 hours of UVB lighting a day. If he does not start responding, I do suggest a Herp Vet visit for a parasite check. I can locate one for you with a State. Please let me know if you have further questions. My goal is to give you 100% Excellent service. Joan