It's also likely artistic license that the vehicle is shown flying with the booster plane aligned with the horizon, F9 guidance doesn't really care about the vehicle roll state.
Not sure if you're arguing or agreeing with what I said. Yes, the whole rocket seems to be rotated 180 deg at certain times, but that's quite likely a snafu (a.k.a. "artistic license"), but one core is always rotated with respect to the other two.