My pre gran mal aura sounds like what you are describing - except it is followed by a full seizure for me.
The sense of becoming an observer rather than participant is weird - I understand everyone but can no longer communicate. I tend to smile and nod and then off I go...
My control was much more of problem when I was younger and had my period. Every one I had was pre-menstrual when grumpy, stressed, not sleeping well and not eating well. I got tired of arranging my life around my period and when I was in my 40's I forced my internist to give me the meds to induce menopause. I arranged to see him while in the midst of a serious premenstrual 'mood change' and scared the heck out of him. No seizures since then. I had a problem when I got reflux and began using Prilosec - turns out it raises serum levels and I got a little toxic until I figured it out. My advice is to learn every single thing possible about any meds you are given - most will be affected for good or bad by lots of other meds, all have side affects and long term consequences. I figured I would trade my liver for workable brain cells.
The only fear I have ever had was breaking my brain while too many docs played with it.
So far so good - I ski, rock climb and used to race off road trucks. Now, I manage a sleep lab, nurse my arthritis and quilt. Except when I am conquering a big piece of granite or trying to make it down a diamond trail with no falls (never gonna happen).
Don't be scared too much - be annoyed that you have to put up with the silly thing and get it controlled and own it for yourself because no one else will ever love your brain more than you do.
Good luck!!