I moved everything to the "new" first home screen. It's not that bad, as I only have to swipe once left or right to get to the calendar widget or the inbox widget, both which fill the screen. Before, I had to swipe a few times to view those widgets.
My opinion on what has happened is that while swiping the screen, I swiped slow enough so the OS thought I was re-ordering the screens. Maybe I can figure out how to re-order them back to the way they were.
On top of the home button snafu, I can't change the wallpaper by just long-tapping the screen. Long-tapping the screen goes directly to the Live Wallpaper list. I have to go through the setting menus to select a photo for the wallpaper.