Depending on how long they dated and how serious they were...if I were him I'd march to her room and demand an explination! That form of break up is more impersonal and almost an insult. It is my opinion that she's to chicken to really tell him why she's breaking up with him and he's probably better off without her. But then again, I could just be blowing this out of porportion.
Some people just aren't common sence smart!
Hope he's okay!
Hootie