Nice name calling, what are you 8 years old?
Sandin had a great camp and was rewarded. Correct. However, he was not placed in a position to succeed. He was too sheltered in his limited time here, not used in situations and parts of game where his skillset can shine. To top it off, he's being played with players like Marincin/Holl. It's okay to give players a shot, but atleast give them a fair opportunity to do what earned them that spot.
Babcock is not a good developmental coach, especially for young and skilled players, but that's not a surprise. Dubas caught on and realised he won't let Sandin be wasted playing under 15min per game in situations which won't help him develop.
Like others have said, Sandin will probably have to play a months worth of games to shake off all the Babcock in his game.