[YmMot]

I think it's a little hazy. Magic has a long tradition of magicians performing similar tricks, and as long as you either reverse-engineered it on your own or came up with your own way to accomplish the illusion, I think most magicians would respect it.

I think the issue here is that he's taking the performance whole-sale rather than coming up with a similar illusion. Teller offered to buy him out, which I think is a combination of class on his part and recognition of the nature of tricks in professional magic.

It'll be interesting to see what happens.