Yoga Journal doesn’t call this a pose, but I have always liked the idea that any shape in your body that feels good or challenges you is yoga. My teacher Silvia Mordini always uses the example that making a pizza is a vinyasa.
If you’re a vinyasa junkie, you’re probably doing tons of upward facing dogs and cobra poses. These help with spine mobility for sure, but reaching the toes to the head is an even deeper backbend and is just another way to improve poses like your wheels and bows. So give this rarely used pose a try, and remember it’s a life long practice!