Why did Cleveland act the way they did when Lebron left?

because he basically f***** them for the next few years. had they known that he was leaving, they could have traded him like the magic are with dwight howard. he never told them anything until 5 minutes before he told everyone else and not to mention the fact that he announced where he was taking his talents in an hour long special highlighted by jim gray asking him if lebron still bit his nails