Love reading your posts! When I am dealing with grumpy preceptors I try to just be as pleasant and cordial as possible, and don't acknowledge their rudeness. It can be very upsetting though. You are new, and learning, and all tasks take you ten times longer to complete. On top of it you are trying to make a good impression on the new unit and you have no choice but to be around this person. It stinks!
Where on the East Coast did you relocate to?