Well...............here we go:

1: Just keep it feeding, worry about the frozen thing later when the snake is in good health and not suffering from the problems it is.

2: Nice warm soak will do wonders for the shed and maybe help pass any built up fecal matter and so on. Do this with caution and a watchful eye on the belly issues.

3: MAJOR quantine setup, paper for substrate clean water and good temps. Change the paper a few times a week until you see some improvements in the overall health and look of the snake.

4: The urine burn (if that is what it is) will need to be looked at. BY ALL MEANS a vet check is needed here. More then likely the vet will suggest some Chlorhexidine or the like to use in the soak to clear up any bacterial and viral loads on the snake.

A good vacation from handling (except during the cage cleaning) and a good diet of well proportioned meals with heat and fresh water should change things around for you with this snake. Please get it to a vet ASAP to get it started on some good meds and have a fecal done.

Keep updates coming!