Man, I was annoyed as well with his continuous attacks on the coach and Trezeguet this season, but I think he stopped it, at least until the season resumes
About him praising other clubs, let's be honest. The man didn't come to a normal Juve thread and said "Barca are the best". He was defending his club in the Primera Liga thread, but other guys didn't like it and wanted to continue their attacks on his club in all the other threads.
I think he deserves this ban because of his irresponsible words in this thread and I think he deserves a warning if he praises Barca in a thread else than "Primera Liga" but I think he deserves a chance when he comes back and not to be teased in each reply to his posts in the whole forum.