There's an excellent article and interview with Daniel Radcliffe in the London Daily Mail, if I remember correctly, which is easily found with a Google search.
His manager and business guide is his father if you wonder who he listens to. Reading his answers to questions, he gives every indication of being a really well grounded lad, level headed, with his nose on the wind screen as it were.
The nude scene in Equus is a very small, brief, part of the play, a serious work which deals with a very dark, complicated, subject. If he were any other actor, other than Harry Potter his self, there'd be no where near the interest in his bits, something which you could glimpse if you were around him when he puts on his swimming costume at the beach, like anyone else in Europe. I guess to us, at least here in the Netherlands, someone going starkers isn't all that big a deal, it can be seen on TV. Everyone who wants to see his bits will, they'll see he's a male, and they'll move on to something else. Certainly not a career ender over here or something to get one's kit in a twist over.
He obviously wants to do a smashing job as an actor and explained going briefly starkers is what the part calls for - that he's not ashamed to have his kit off for it. I really hope he is brilliant in the part. He's obviously, from the interview, a very nice and hard working lad.
God knows, he'll never need to do anything for money again, he's already banked a considerable fortune in the millions of pounds for his Harry Potter work. Good on you, Daniel.