Saying he doesn't want to leave Montreal is not saying he won't leave Montreal.
Right now, it's still a very real possibility that he will leave Montreal.
How? His brother plays in the same team and he is gonna receive more money in the long term in the NHL then in the RSL. He worked hard in the minors to earn a spot with the canadiens and he finally got one. Instead of winning 60k in the AHL, he could have deciced to make more money in the RSL.
So it was leaked a while ago that the Russian league was ready to offer Andre a contract. Much has been written about this and a lot of it was negative if Andre took the Russian deal. Maybe just maybe, the word got back to Kostitsyn that it would cause a lot of problems if he went. So maybe he is now stating to everyone that as long as he gets a proper raise as per Hab standards he will resign and finally bring his family over to prove he is here to stay.
In any case, this is good news and it really is the proper way Andre should act by NOT turning his back on the Habs.
It's not just about money, the NHL is the best league in the world, and it's 100 times safer in Montreal than in Kazan, Russia. The mafia is very strong in russia right now, so being there with a big contract makes you either a member or a target.