"We are a good team. We practice like a good team each and every day. I don't know what that showing was," he said, via the Minneapolis Star-Tribune. "We got Detroit coming up this week Sunday. That's our focus now. San Fran, it was a blow to us ... They're more of a team than we were."
He added: "As a team we prepared too hard to go out there and put a performance like that in. I feel as a team we're going to come together and we're going to go out there and beat Detroit. I'm very angry right now as you can see, because we prepared way too hard. But we're going to go out there and get it."
Afterward, Griffen earned some praise from head coach Mike Zimmer, who was just as upset as anyone after the loss to San Francisco.
Beating the Lions would certainly be a statement and proof that the Vikings are on the right track. The team was a trendy pick by analysts to reach the playoffs this year and it's easy to see why. They are loaded with young talent on defense, they have Adrian Peterson back and Teddy Bridgewater should take a leap in his second season.
They need to prove that they are the team everyone has made them out to be on paper. Griffen certainly seems to think they are.