There is a lot more to this drama than we think. Possible scenarios that I have reviewed in my mind (being the analytical person that I am):
1. The Devils/NHL took some "under the table" money from the KHL to let Kovy walk without a fight
2. Kovy is entrenched in some kind of "black market" business in Russia where mobsters basically said "you play or suffer the consequences"
3. Kovy is just being the "Che Guevarra" of hockey and being a revolutionary wanting to make a statement to the NHL
Certainly, the NHL and teams must monitor this closely as we could see an exodus of players from the NHL. I wouldn't be surprised if this signing by SKA is followed by another high-profile signing by another team in the KHL - perhaps Ovechkin / Malkin
If you ask me, this is the DAY THE NHL died.
Sorry, but having the Russians go home will not kill the NHL. More North Americans in the league, the better.