I saw that thread, and twas interesting.
Like you ( I think you said) I sparingly use BS on any full shot with the cleves, and not noticed anything with that method. IF they have changed stuff then the v helpful recent clinics are out the window which would be a shame.
I have burned a ball testing stuff, and pretty sure it is just a new WGT calibration as my new %s seem pretty consistent. I don't get the need for it, but wondered if any one else seen it. IF it is WGT playing please stop it new Mulligan justification revenue or not! I accept maybe just an off day for me LOL!
EDIT: I VERY quickly tested the CG64 FBS and found about 2 yards spin back. Not a shot I really ever used and a quick couple fire offs so FWIW.