I think as Sasha has matured, she's taken responsibility for her actions more seriously. She may still be fiesty, competitive and have the desire to be the best, but I think some of the games she may have played as a younger, newer skater may have come more from overzealous confidence than as a bully. A friend of mine is an Assistant Producer for ESPN, and over the years has occasionally worked at skating competitions. She shared a story with me how after 2002 Nationals, after all the hoopla about Sasha bumping Michelle and the interview where both Sarah and Angela said it happens all the time, but seems to occur more when Sasha is around, she watched as the skaters assembled for medal ceremony and said Michelle, Sarah and Angela were very friendly, chatting away among themselves, but were obviously positioning themselves so that Sasha was disincluded from their group. In her opinion, that is why many of the reporters and fans ran with the whole "Sasha is Mean" story back then.
IMO, I think elite skaters are very focused on what they have to do and probably come off seeming bullish on the pratcice ice. They are also extremely confident and that can come off as arogant or even cocky. I think Sasha tends to be a very introverted skater and probably is so into what she needs to do to prepare for her skate, that she simply doesn't watch out for the other skaters on the ice with her.