So, it does have a name!
I've always had trouble clearing my ears even though I try to do all the tricks, etc. My and a buddy were making a night dive at our local dive site. It was already dark and being out in the county away from the city lights made it seem even darker. We entered the water, swam out and went down on the line. Again, my ears were giving me trouble, in particular, my right one. All of a sudden, it felt like I was in a whirlpool, spinning around the down line. At first, I wanted to bolt to the surface, but I fought that off. Instead I grabbed my buddies shoulder and squeezed as hard as I could, until the feeling stopped. Didn't know what was going on, wanted to bolt for the surface, but I calmed down, breathed, and relaxed, and waited.
PS. He eventually regained full use of his arm after I had squeezed hard enough to cut off circulation