Strange Behaviour??

Something worth noting happened today during my second session revolving Steven and him having to chuck a trantrum and go hell-violent on Mrs. Paul, the SWBL session supervising teacher. I didn't hear much of what Steven was saying because he was trying to keep his voice down whilst talking to Kelley at the same time to prevent the teacher from hearing. A few moments after Mrs. Paul tries to get both Steven and Kelley quiet, boom! Steven ended up blowing up! I remembered distinctly that Steven told Mrs. Paul specifically to "Shut the fuck up!" and "Fuck you!" to boot and kicked one of the bins (the one near the whiteboard) to vent his anger and frustration for good measure before being sent to another teacher. I am friends with Steven but I have never, ever seen him explode like this. To tell the truth, I was scared witless because of that distinct change of personality *shivers* and the way he acted. I could feel an invisible blanket of silence settling in the room seconds after he left and everything was still and quiet. It is just me, or is something wicked coming our way for this year?