Hi T.J.,
I'm sorry to hear what has happened. This sounds like it may have been a grand mal sz. but it might have also been a severe cp sz. I've always had cp and absence sz. but just this past yr. I started having grand mal sz. every now and then. I found out that it was from my AED drug level being to high causing the grand mal sz. I know it sounds strange but depending on what a person is taking this can happen. I take mysoline which breaks down into phenobarbital and the phenobarb level was so high it caused me to have a grand mal sz. If you have cp sz. it may have been a severe cp sz. where a person has muscle spasms and begins to shake this happened to me once, but I was conscious. I fell but when I tried to get up I couldn't.
You might want to call your neuro and request that a blood test be done to check the drug levels of your AED's because sometimes if they are to high or to low grand mal sz. can happen. Here's wishing you well and May God Bless You!

Sue