Stunning and mesmerizing,
I'm guessing that the plasma is following the magnetic field lines. Perhaps it is ejected, flies upwards until gravity stops it, then flows back down the field lines as it falls back.Why is it that the flares appear to reverse course exactly. See at the right side at 1 minute mark for an example. One would expect that the flare would fall back to surface of the sun, as if you sprayed water with a hose on an angle.
Is this an artifact of the time lapse, what one sees is the change in intensity of the flare over time as opposed to some matter being ejected?