Saw the WFWL posts and now that's been updated to IT'S REAL by DX-World. When I worked them, I was seeing his signals very occasionally, but figured it was worth a try.
While I was calling, he was mostly gone, but then appeared. He gave me my signal report and stuck around till the RR73. About a minute later, he confirmed me on his ClubLog LiveStream and disappeared once again.
If he would run SuperFox/H (even unverified) he could work 9 at a time with max power instead of greatly reduced running 5-7 streams. Live and learn.
Being in his log and an ATNO, I went ahead and spent the 5Euro to get a card and LoTW, before they mysteriously disappear. Will try for other contacts as he continues. Their QRZ and website doesn't make any mention of this activation. Maybe they took a "remote box" and dropped it somewhere and poked up a vertical and then left it to the weather, hopefully to escape immediate detection.