If you haven't seen this, then he's doing it very well.
Glenn has a new method for a nearly invisible OHTP without the usual tells. I've been messing with it for a few weeks and it finally clicked a couple days ago. If you already do a one handed top palm, this will make yours better. If you don't do one, this is the one to learn. Take a look.
http://www.vanishingincmagic.com/magic- ... -top-palm/