I'm far less certain of this explanation.This is an excellent analysis of Mitch Moreland and wonder if his new approach reflects some degree of hitting mentorship JDM is providing this team.
In looking at Moreland's 2018 splits (https://www.fangraphs.com/statsplits.aspx?playerid=3086&position=1B&season=2018) by 1st and 2nd half, one sees a similar shift in batted ball profiles. He went from a pull-happy masher in the first half (with a 126 wRC+) to a balanced approach in the 2nd half (complete with a 58+ wRC) It's possible that Moreland has made an adjustment, it is also possible that pitching inside is just a mistake with Moreland.