Yeah, two doubles.
Two doubles from June into the pre-June makes the XBH% 37 to 43, which is completely negligible when talking about "turning a corner". And, if you take two bases from June, his IsoP is only .174, a whopping 2.3% increase.
His K/BB improvement was in May. He was 27/11 in April, 19/18 in May, and 22/11 in June. Oh noes, he's regressed!!
The difference between a hard hit single and a double is azimuth. Since I don't live in SC and the games aren't televised, I can't speak to any noticable improvement. But, statistically, there's very little there to suggest a "turned corner". If you are going to call 2 more doubles "turning a corner", so be it. But don't expect other people to buy into it. Sell crazy some place else.
EDIT: Now, this isn't to say he hasn't shown some improvement. However, the difference is marginal. Maybe it's just me, but I think of "turning a corner" to mean going from relatively bad to relatively good. He was good to begin with. And, his improvement needs to both continue and be sustained longer than a month in order to consider it noteworthy.