"I've just taken the decision that I'm going to now go full time back into the theater"

Trevor Nunn's quote suggests that he has actually made a mindful decision to devote himself to the theater. This might suggest that he is going back to the theater after a period of lack, or that he is transitioning from another profession to focus exclusively on the theater. It could likewise suggest that he is taking a more active role in the theater, such as directing or producing. Whatever the case, it is clear that Nunn is enthusiastic about the theater and wants to devote himself to it. His decision to go full-time back into the theater is a testimony to his dedication and commitment to the art kind. It is most likely that Nunn will bring his wealth of experience and knowledge to the theater, and that his presence will be a terrific possession to the theater neighborhood.