I think ultimately.. regardless of what was said by the person.. you can't go into the stands. You can end up hurting children and innocent fans when you go into the stands. The NBA ill needs another fiasco like the Pacers-Pistons incident. However, I think players should be able to point out fans that are being especially unruly and foul for removal.
That said.. I still think the NBA, and American sports in general, are home to some of the more respectful fans in general. Soccer hooligans anyone?