Would this be enough to pattern that tilt out?
I don't know for sure, but I'd be quite interested to hear a report back on whether the slow movement patterning of the coming into plank has a positive effect on the swing. In theory it should work. Let us know if it does in practice! As for the delaying the breaking of the hips on the downswing, I did see that improve a swing at my cert. The instructor had the SFG candidate do a slow pattern swing without a kettlebell, and as she was lowering her arms he gave a tactile cue by touching her hip (or shoulder, I forget) as to when to hinge. So she was to hold the plank as the arms lowered until she felt that cue, then break. It was when the arms were about halfway down, at a 45 degree angle to the body. Try the slow patterning there too, I think it can help. Then practice with a light kettlebell. Also, feel that 4-count that Pavel M. described - the swing is not a 2-count movement (1-up, 2-down) but a 4-count movement (1-hip drive, 2-plank while kettlebell floats up, 3-hold plank while kettlebell descends most of the way down, 4-hinge while kettelbell moves all the way back in the hinge. I may have that slightly different than he described it, but similar concept... feeling those different "counts" in the swing will help you find the delay in the hinge.