I just think he's in a questioning phase. Maybe between cinema, TV series, television programs he didn't find the success he thought he would, he decided to travel and "find himself", he wrote a book, and first he started working on sculptures... he's looking a bit its place in the world. Maybe even in porn haha
As a joke he talked about OF, but perhaps for fun, for a challenge or for artistic experience he wants to try it.
I believe he is one of the best actors of his generation and, joking aside, I hope he returns to acting.