Stacyhs
Penultimate Amazing
Well, I'm not a shrink, so my ability to diagnose is not to be taken as reliable. However, the exact thing that leads me to the diagnosis is apparent ranting and raving in one video, while being totally calm, cool, and collected in a different one while discussing the incident, but seeming totally disassociated from it. (He said that the big thing he did wrong during the incident was use the "f bomb".)
I think the kind of bizarre display from that classroom shows more than a little eccentricity.
That is not necessarily indicative of being bi-polar, but from having time between the two incidents to calm down. He wasn't necessarily 'disassociated' from the event in the school, either.