No. Wawrinka gamestyle is based in his powerful and deep strokes. He has to take risks because it is the way how he plays. This can bring him awesome results like the one of today or bad results like in the match against Dimitrov in Monte Carlo this year. This is how Wawrinka plays; he is a man to be considered because if his game is one he can beat almost anyone anywhere, but you can't expect him to maintain this kind of level. He is and will be a player of ups and downs; love it or hate it, but that's the way he is and nothing will change. Therefore we should enjoy his amazing performances and "forgive" his bad matches.
In fact, I would bet that he won't have a very good grass season. He is not good on grass, it is a bad surface for him.