Sorr to drag this out. But one final, final update. I said I had a bit of faff at security where they removed my airside flag when passed through FW the 2nd time. They waived me through and I assumed I was good to go. Well turns out I get to the gate, and we were using the automatic gates to scn BPs. Of course I get a red beep and Seek Assistance. Obviously assume I have miraculously been OpUp'd. But GA tells me I've been offloaded. So I get pulled to the side and have to sit like a drug trafficker as everyone else streams past looking at me suspiciously. Eventually the GA sorts it out and even gets me back to my old seat. Flight was pretty full, but if there had been any standbys who got my seat after I had been offloaded, not sure how this would have been resolved. Would have sucked to miss the last flight of the day and spend yet more time in airport and airport hotel.