I dont have much experience with bloods but this is very unsettling behaviour. I agree with 2kdime about telling the breeder about this. The things your snake is doing all seem like signs of an illness. The 3 things that come to mind are CSS (cold shock syndrome), IBD (an incurable viral disease), and an RI. If it is CSS it will get better every day and there will be no symptoms like clicking noises, mucous or other symptoms of RI. If it is an RI it will require vet treatment. If it is IBD then I do hope it is no where near your other snakes. That would put all your snakes at risk. I would take it to the vet if it has not improved since your last post. Wash your hands well and dont handle that snake or touch anything in its enclosure until after you have done whatever needs to be done with any other snakes.