If he isn't lobbying for the fan interference call there he's not doing his job. On something so clearly not fan interference as that, he's only going to lose goodwill with the umpires. A beer came toppling towards his outfielder while the ball was in play. He had better get out there. The fan was reaching for the ball and his beer missed the outfielder. It was obvious from the get go that there wasn't interference. Agreed, from the camera angle presented. From the dugout, from the field, maybe not so much.