Yip, I was on the "real thing" for Phase II and got one dose in the extension part about 48 hours before the trial was discontinued. As for flares, the fatigue stayed about the same but last November, I had a flare in my left hand that I called the numb-thumb syndrome. The mad tingles eventually subsided but I've had permanent deficit on that one (good thing I'm not left-handed).
So I really have a major bone to pick with the *s and **s who managed to get our vaccine side-lined for so long a time. I would punch 'em with my numb thumb but I wouldn't feel anything.