It is no secret that I love working out with an exercise ball. Not only do I use a ball for core work, but one also makes a great yoga prop too. An exercise ball can support you in many stretches - like the wheel, aka backbend.
What do you think? This pose is a little different than the one you had in mind.
In your picture, that guy's head was on the ground - and it's called Eka Pada Viparita Dansana.