Serious neck injury ended Scott Kooistra’s season

We noted today that Vikings guard Scott Kooistra was placed on injured reserve just days after starting the Vikings’ preseason game against the Seahawks. Now we know why: A serious neck injury that could threaten Kooistra’s career. Tom Pelissero of 1500ESPN.com reports that Kooistra’s career could be in jeopardy after he suffered what Vikings coach…