Thanks @iacas. I went to the course today before reading your post and actually had the best round of ball striking in weeks. I'm pretty sure I know what I need to do to get the BS back to a decent place, although I have always been a bit of an inside take-away guy... I'll try to get some video up this week of what I'm doing to address this but basically I think I tend to get too "armsy" for the first foot or so of the backswing and don't really get any upper-body rotation started till around A2 (although I'm definitely 90* at A3, just way too flat) which leads to a really inside A3. This is a bit of a by product from the Evolvr work I did last year when I was straightening my trail knee WAY TOO SOON and getting all out of whack with my sequencing. I've probably taken this to too much of an extreme (or as Penick would say "taking the whole bottle of aspirin") but I won't really know till I take some video.
Took some dry run practice swings, after seeing your post, with this thought (get the upper body rotating sooner instead of being armsy) and from my POV it seemed like my A3 was MUCH better but I'll reserve judgement until I get some actual DTL video on it.
Regardless, I really did have a pretty good day today contact wise, lots of those beautiful, high lofted irons that just climb forever and land as sweet and softly as a swan on the green. Not a single worm burner, crapola shot which has been the bane of my existence lately "so I got that going for me."
Hitting some ugly pulls here and there but my main concern right now is just getting good clean contact and that has been improving greatly.
I'm reshuffling my priorities to get more practice time and less course time for the next few weeks to see if I can get things back on track. I'll post new video of me working on the BS soon.
Cheers and thanks for the help.