If Ray left over a personal issue with Rondo then I guess he isn't the consummate professional he was made out to be. people have to work with people they don't like or get along with all the time. If Ray couldn't do it, that seems a bit petty.
I honestly think he didn't like the near trades in the middle of the season and the possibility of having to play half a season living somewhere else while his family was living here. Let's be honest, Danny wasn't going to give him a no trade clause and Danny would trade him mid season in a second if he thought it in the best interest of the team.
Now, because of the nature of the way the Heat are built and their championship ability, its pretty certain Ray will be there the length of the contract. Riley wouldn't dare trade Ray and get Wade and LeBron angry.