it is the shift from extreme trust to distrust.

cognitive dissonance would have occurred if he became indifferent to the cricket match; change in attitude.but here as bro said that he feels happy over pak defeat.so I guess the envy and distrust are the shift from one pole(trust) to another (distrust).

his behavior has changed; cheering over another team's player in public,means nonconformity to the majority group and popular norms.

I think its not any psychological disorder.it is extreme form of emotion,anger and hatred.