I'm good. I thought I was experiencing an extreme form of vertigo, but then I heard some cracking, creaking, and crackling sounds, then a few neighbors screaming, and so I grabbed my phones, cards, a bottle of water, and I darted down the stairs. 3 hours later, I was walking up 16 flights of stairs. I'm not taking the elevator for a while.
It felt like that Viking Ship ride at the theme park, like a Martini (shaken not stirred), or a dumpling being tossed around in a bowl of soup.