You don't need an Astronomer for this, you need a Psychologist. I guess it's just a coincidence that it follows the exact same track as the other more obvious flare. The fact that they are opposite the camera center as the source should also be a dead giveaway. It's the same as with Stereo HI1 and the Venus Meatball, it always stays opposite screen center from Venus. The other camera has the same type of flare, only it's on the ground...and opposite screen center as well [link to www.awi.de]
Watch the whole sequence [link to www.awi.de]