I'm going to straddle the fence on this one: But I think Royce uses twitter as a tool to deal with his anxiety. He's always tweeted a lot. This isn't a new thing. Do you remember some of those times last year where Royce would "retweet everyone!" Only difference was, last year, only Cyclone fans (who are an incredibly supportive group) and other anxiety sufferers who heard of his plight followed him. Therefore, he got most positive responses. He was able to see a community of support and knew he wasn't in this alone. He was in a land of lions.
That situation changed. Now, he reads tweets and sees negative responses. He's a public figure, and that means more people follow him. the more followers, the more a-holes that will follow you. Combine that with the fact you know he will respond to you, and you get a lot of trolls. Twitter's changed from a helpful tool to a destructive one.
Maybe this would have happened at Iowa State too? He would be a top 5 player in the country, on award watch lists, and on a top 15 team (only guessing)... so same story, more people would have followed him, and more trolls. I think he could have had the same problem at ISU... so in that sense, thank goodness he's not here.
Bottom line... he was tweeting AT 3 AM LAST NIGHT!! That's not healthy for an NBA player. That's not putting in the WORK you need to in order to improve. Get off twitter, find a new support system, and have your actions speak louder than your tweets.