So my suspicion: The sweat shirted arm at the right is in the right position for that person to have held some sort of electronic device in the frame, wave it about and then move it out of the way. The jerkiness of the track suggests that the device is on a handle rather than in the palm. The blury area may actually the light reflecting off of the moving hand itself but there are some very straight elements in the blur that may be something other than a hand. Perhaps the device handle or some other part of whatever it is.

So, to someone who has access to the tools that were on site, it shouldn’t be too difficult to find the device, perhaps with a long handle and a number of LEDs, that was used in this picture. The image in the digital probably also has a time stamp on it. It should be also simple to ask what the person with a grey sweatshirt what they were doing at that time. One couild also look at other pictures and video taken at that time to determine what else was going on.

And these are just my thoughts typed up while I’m sitting here. There’s a lot of other things I’m sure that could be done to determine what exactly is going on in this photograph.

Maybe when I get home tonight I’ll see if I can recreate this.