I also have pressure build-up in my sinuses and make strange gurgling noises after blowing my nose, which also is audible to others. The skin is thin on the bridge of my nose, with a little bony lump and broken blood vessels there. I had an operation four years ago to help me breathe through my left nostril. I still can breathe through that nostril, although my septum has shifted even more. My left ear also crackles and hurts .
Eagle syndrome is facial pain caused by an elongated sytloid process, or peg-shaped bony prominence.
A bone spur is a protrusion of bony material attached to a bone. It can extend into a cavity, as in your case. TMJ can cause some of the symptoms you describe, including the pain and crackling sounds. You probably should see an ear, nose and throat specialist. 882-7000 to make an appointment with a University of Missouri Health Sciences Center physician.