Sounds like you've got a bad case of fog going on. Now I know that they are looking into MS and possible CNS on you. I do know that sometimes when having a bad flare this type of stuff happens.
If it's at all possible, I'd recommend that you stay home and rest totally. If you need to go somewhere, have someone take you. At least until you hear back from your Dr's as to what they think is going on.
It's possible that your flare is really and maybe you need some high dose steroids to clear it up. I'm not a Dr and I'm not recommending that, but from my own experience, when I'm in a terrible flare usually high dose steroids is the only thing that pulls me out of it. I'm talking like 80mg or high or pred daily for a couple of week for me.
Try to rest as much as you can and lessen the amount of stress in your life. I know that's easier said than done, but being stressed and overly tired is a bad combination for a flare up.
DX- RA, Lupus, Fibro, LGL Leukemia, Pulmonary Hypertension, Bells Palsy, Gastroparsis, Blood Clots, Glaucoma, Chronic Pericarditis & Pleurisy, Severe Anemia. Way to many medications to list.