About Matt Barnes: he has said in the past that him and Sarver don't like each-other and he was unhappy with how his one year stint in Phoenix turned out.
But he has never said anything bad about the city or his team-mates; he was, however, very unhappy with Terry Porter's ways which he says "put a (expletive) on the team's season. Wrong coach, wrong system"
Porter alienated everybody by treating his veterans like Elementary School students in practice (Defensive slides, chain runs, fire feet, diving on the ground after imaginary basketballs, etc) and putting in that ill-fitting Detroit Pistons system that didn't suit STAT or Nash.
If only Kerr had done the right thing by promoting Alvin from the start or hired Budenholzer (Who was a finalist for the job in 2008) instead.
I think it's very telling that Kerr fired his golfing buddy after just 3 months in charge. Says a lot about what the organization thought of Porter's coaching that year.
Bud and Alvin would have had the team continue an open style of play while trying to improve them defensively...MDA's stubborn refusal to practice defense resulted in him quitting to go to a bad team who also eventually forced him to hire a defensive assistant. (As did the Lakers and Rockets)
Coaching makes a big difference in the NBA and Porter was clearly the wrong guy for the job that year.
I don't blame Barnes for his frustration. They averaged 118 PPG (!!!) after Porter was dismissed and that's with Barnes/Lou in place of Amare/Diaw who missed the last 30 games due to injury and trade, respectively.
Barnes said, "If we had Alvin's system from the beginning and if Amare never got hurt, it would have been a great year. We had what it took at all the positions."
Basically, everybody has blamed Porter for that chaotic season; he failed miserably to command the respect and buy-in of his players.