Well i looked up that control after you said that and.... WTF?!? ITS $25.00?!?!
Jeez thats pretty expensive. Could you post a performance video or a review or something? cuz i can't find any on the web. It sounds like a good control though.
Well, there is no video of the Losing Control because once you see the control a couple of times on video, you will immediately know how it's done. There is no secret move so to speak (so it is not angle sensitive in that respect), it's more of an optical illusion. Nevertheless, when executed skillfully on live audience, even a couple of times, it will remain undetected. I've heard that Lee showed it to magicians and they couldn't see what's going on at first.
I can describe how it looks to the spectator - you spread the cards and ask them to touch one, they do and you show them their selection, then close the spread. And that's it
Technically you can learn the move even if you watch one good performance of the control in slow motion (it requires some practice though to do well). From this point of view, you may feel it's not worth $25. However, the efficiency of the control puts it in my top five controls, so I am happy I bought it and supported Lee for his wonderful idea

Perhaps Lee could make a download version, it would be much more convenient.