I've got .597, but splitting hairs there.
In that stretch, his walk rate is significantly higher than his career average (16.4% to 10%) and his K rate is slightly better (23% to 25.1%). His BABIP over this stretch is .236, his career BABIP is .332. If he continues getting BABIP luck 100 points below his career average, I agree his results will continue to look bad. There's reason to believe it won't continue this way, and his expected wOBA being 25 points above his YTD wOBA probably backs that up.