Maybe when you woke up, you were in a similar mind state to the one when you woke up after the stroke?
You may have had a dream which put you in that place, one that you didn't remember when you woke up. We dream all the time without realising it. It's how the brain stores memories.
I recently had a road traffic acident, when people overtake me, it puts me in the mid set after the accident (nervous, bit intimidated) momentarily.
Maybe a similar thing happened to you, as having a seizure is quite traumatic, especially waking up surrounded by people.
I think what you experienced was minor PTSD. But i mean.. i have no idea medically.