Has he improved though as in focus, confidence, being assertive and attentive on the ice in a game? I wonder why he hasn't be recalled, so things must not be going so good for Sven.
Say what you want about Burke's comments but that's just part of creating and keeping a winning culture.
IMO, I think Sven has not been recalled because he's already played in the NHL, he was sent down to work on his game. Other guys are getting a look so we can see what we have there, plus in their situation it is good for their development. Sven already knows what the game in the NHL is about and he's down there to work on certain areas so he can get back to there, hopefully by next season. In short, it is more beneficial for him to be playing on the Heat.
Regarding Burkes comments, I can understand people's disapproval but personally I have no problem with them. Pro sports is not your typical profession, it is a very public occupation and these athletes have fortune and fame. If Sven cannot handle what Burke said, that shows to me that he's mentally fragile and he's going to face criticism from the media multiple times throughout his career. Down the road, Sven may actually thank Burke for what he said because it was some tough on the job training.
I'm not an advocate of ripping your players in the media (ie. Torts), but when done strategically at the proper times I do feel it can have a positive affect. This isn't Burkes first rodeo, and I think he knew exactly what he was doing. But, for the most part I do feel that criticism should be done behind closed doors.