Well, many tests have been done on Evan to see if they can figure out a) whether what happened was a seizure or not and b) if it was, what is the cause.
Every test that has been done has come back normal. But, we met with a neurologist today and he's still not convinced it wasn't a seizure. So, Evan is going to get an MRI and another EEG done in the next day or two. We're not sure what to think, but we're both concerned and scared.
We've been staying with him the whole time (we got a cot put in his room on the first night so we could both stay), and will continue to do so. If anything, he'll know that his parents are here for him - whatever he needs.