Is that really possible? I mean, we all seem to think there is a "hangtime", but what I studied in high school physics was that a body will go up, come to a stop, and then fall back. True, the speed at the top is 0, so for a small interval, from reaching close to the top to coming down, there is a "hangtime". You probably mean that. However, that would suggest he is releasing close to the highest point, which is not necessarily a bad thing. I do agree that fatigue might be more of an issue there, since all the force is then coming from the upper body.
Thoughts?