The internet being what it is, the witness in the above case now has an interview on YouTube:
There's a little more information, including a claim that a) it wasn't drones, and b) on further investigation, it seems the phenomenon is 'known' locally.
The cynic in me notes this would be a great way to get the interest of some Bigelow-type investor in a property which, the witness admits, has pretty much nothing on it...but that aside, the earthlight-like aspects of it make it an interesting account, if true.