Witnessed a spherical object hovering motionless 2000' in the air. After several minutes it made a rapid, controlled descent.

While we were sitting on a rocky bluff taking in the scenery I happened to notice a bright, shiny object against the deep blue sky. At first I thought it was simply an airplane. But as I watched it for several more seconds I noticed there was no movement. It was totally suspended in the sky, I'd say 2000'-2500' in the air about 3 miles away. To be sure it wasn't moving, I put my thumb up directly under it and watched to see if it went up/down or left/right of my thumb. It did not move. It was hovering in place against ridiculously strong winds blowing from south to north. I watched this strange, hovering behavior for approximately 2-3 mins.
About 1 minute after I began watching this object, I said to my wife Connie, "Connie, check that out. There's a UFO right there."
I said it half-jokingly, but in my mind there was no other logical explanation. I guess I was looking for some confirmation that what I was seeing was actually happening.
We watched it together for another minute or so while it was hovering in place, both of us entirely perplexed. Connie even said to me, "That is really, really weird!"
Shortly after she said that the object began to descend rapidly in a controlled manner down and to the left (from south to north) into the strong winds. I quickly grabbed her phone and started recording a video. I couldn't actually see the object on the phone because it was so far away, but I tracked it with my eyes while I moved the phone downward where I thought the object would remain visible in the frame. I lost the object with my eyes (and the phone) when it dropped to the same level as the mountains. That's why the video ends abruptly. I thought it was gone, but it was not.
We got a visual on the object again about a minute later. It was hovering just above the treetops in front of the distant mountain. Kind of fading in and out of visibility. Then it just disappeared. Poof! Gone!