Much like learning how to lift with proper form, using the negative part of a movement in Handstand can help your body learn the path (just in reverse). This drill will not only give you the ability to balance for moments, but it will also tax your handstand muscles as you fight for every second of hangtime on the descent from the wall!
Start with 3 seconds or so, like in the video, and as you repeat this drill you’ll be able to release on a 5 to 10 count as you get stronger!