Hi there,
Post op for a cervical corpectomy, I developed a jaw thing kind of like TMJ, and also the ear thing.
My physio stuck his thumbs in my mouth and used a trigger point thing way back on the muscles behind my molars... ears popped open and jaw felt great.
Yes, aspirin will cause ringing if you take too much, also, an elevation in your blood pressure will cause ringing.
But considering your cervical problems... check muscles pressing the nerves. It seems the most probable cause.
Hope that helps.
Niki47