Update: I just moved that big text frame from the bottom left to the bottom right and see what I got. Not what I want, but interesting all the same:
And if I move that big box back to the left:
And now if I go to the Page Palette and delete that last page:
There was another option I was thinking about but haven't tried: selecting the text frame on that bottom left page, the one under that big tinted text frame, and setting that to Balance Columns. But what I tried worked.
Warning! Do not try this at home!
The document I am working on is 112 pages, lots of illustrations, fair number of footnotes, and my Level 2 Headings span both columns.
As I was playing around with Balance Columns, I made a terrible mistake. I went into my Master Pages, clicked on the text boxes on each of the two pages, right-clicked, and selected Balance Columns. I then reapplied these masters to my whole document.
Bad, Bad, Bad!
After this, about half of my edits would crash InDesign cc solid. Adding footnotes without a crash was impossible, but half the time I simply made a text edit, or moved a graphic, it would crash.
Over the past couple of days I have had about 40-50 InDesign crashes. (Good job on recovering most of my work, though; good job, InDesign developers!)
After changing the text boxes on my master pages to not balance columns, and reapplying, InDesign seems much more stable.