Snopes was already debunking sorcha faal on the 14th. You need something before july 13th to assess credibility.
There are plenty of credible comments July 12-13, about the likely reasons he could have been a target, due to his knowledge of voter registration inside the DNC & that he was going to, or had—spilled the beans on someone/thing.
As I said, I received email about it from a private group on July 10. They may be some of the people commenting around on various news articles as they started popping up that week. If it popped up by some phantom org, then it would likely be based on what they’d read on so many news sites in comments.