An ex-elder who lives in my town moved into an apartment and divorced his bat-shit-crazy dub wife. He continued to provide support for her and the kids, and the kids were sympathetic enough to keep associating with him, eventually becoming employed in his successful business.
For whatever reasons, he escaped judicial action at the time. Seven or eight years later, he got a call from two elders inviting him to a judicial meeting at the hall on a given day. He said he was no longer a witness and hadn't been for years and that no one viewed him as one. Therefore, he wouldn't be at the KH on that or any other day. They told him they would hold the hearing anyway and "act on the evidence available."
Later he got another call from the two elders, telling him he had been df'd.
It turns out his wife had begun dating a "brother" at the KH and a wedding date was imminent. She wanted to be "free to marry" so she told her elders that her ex-husband was living in sin and needed to be df'd so there'd be no gossip about her status and freedom to marry. She provided whatever "evidence" they required as to his shack-up status and that's why they called.
My point: often it's a call from a related dub that moves you from the "inactive" to the "needs action" column on the BOE's to-do list.
Flipper. you may have been moved into that column. There's a small chance you may never hear from this guy again, for a variety of reasons. More likely, you will get a "return visit" and he will bring a companion. In your account, he just showed up one morning unannounced, right? So that's how the ambush will occur.
Your best policy going forward is: Grant no interviews. It may not make any difference, but don't make it easier for them.