I love Portland too. I'm not from Maine, but I can see it from the end of my driveway.
That weekend, the Portland venue was called Space Gallery. Another up there we'll play now and then is callled Blue.
It means to shallow the downswing plane. I tend to come over the top, so shallowing my downswing plane will produce less of an outside in, over the top swing.
Watch this guy. Forget the commentary, just watch what he does with the shaft at the start of the downswing. It flattens; the clubhead drops down, the elbow tucks in, the entire body rotates hard.
Sergio Garcia Slow Motion
I'm not sure how helpful it is in terms of telling you what to work on. It wanted to give me anti-slice advice, and I never slice! Seriously though, my miss is a big hook, so I wasn't sure what to make of it.
i think the best part is how it records video of your swings automatically and cuts them perfectly. You can easily delete the ones you don't want. Only thing I haven't figured out is how to export them. The built-in editor leaves something to be desired, and I'm not sure you can share them outside of the Zepp app.