There is also the issues as to whether or not "some", and I stress "some" of the perverted nature was a distraction so people did not expect too much of him. After all, he was willing to find Lady Sundadie instead of be Hokage himself.
There are a couple of ways in which I can prove that I exist. 1. Occam's razor. when faced with competing hypothesis that are equal in other respects, selecting the one that makes the fewest new assumptions. Is it easier to believe that I exist or that everything that I experience is simply a manifestation of some other existence. 2. Reality. I am simply not smart enough to create a universe in my own mind or interesting enough to exist in someone else's consciousness.
I agree, it is simply too bad that Lee did not end up putting up more of fight. That being said, it is probably consistent with the story line. (Additional note, I believe I had the same look on my face as Gaara did.)
In classic Naruto fashion, I think Naruto will convert him back, but Sasuke will not be able to forgive himself. Therefore, in some last act of atonement, he will sacrifice himself to save his friend.