1A. Face Pulls x12reps - light loading, this should not be a struggle, but maybe a little burn.
rest 60 seconds
1B. Chest-Supported Row x12 - light loading again, and put all of your focus on scapular retraction
rest 60 seconds. Repeat for a total of 3 sets.
Heavy Compound: Deadlift - 3 sets, working up to a heavy double or triple. No straps.
Heavy Compound #2: Bent Barbell Row - 3x5, working up to a weight close to your 5-rep max. Use straps and be as explosive as you can (I wear a belt to pad my stomach because I tend to hit myself pretty hard with the bar sometimes).
Lat Isolation: Pulldowns or pullups with a close neutral grip - 3x8-12, whichever feels best. Keep your elbows directly beneath your hands, don't let them flare out.
NOTE: You still need to do rear-delt work on your shoulder day to keep them balanced with the front.
There have been articles addressing it, but they're hard to find and I don't remember what they are. In your case, you don't need to back off of leg training because the imbalance isn't in your legs. Just be careful of hitting your lower back with too much volume because it's easy to stall out your deadlift gains that way. Hit your squats, then move on to isolation work for your quads and hams (lifts that don't stress the lower back much).
What you DO need to back off of is pressing movements. Do just enough to maintain your current numbers until your Bent Barbell Row 5RM is higher than your Bench Press 5RM. Then go back to your regularly scheduled program for chest.