Needless to say, the sting from that loss has not completely vanished.
That's why the Lions Week 2 matchup against the Niners is highly anticipated. There's no shortage of storylines, and there's no shortage of ill feelings between the two teams.
The NFL will go out of it's way to take advantage of this fact. In particular they'll replay "handshake-gate" a million times to remind people how much these teams—and their coaches—hate each other.
Don't believe the hype because that's all it is.
Jim Schwartz and Jim Harbaugh are two highly competitive people and that's all their "altercation" was. They are past it, and so are their teams.
The real story take place on the field, between the hash marks, not on the sidelines.
Both teams are 1-0, though they got there in very different ways. The Lions eked out a win over a below-average team with late-game heroics, and the Niners beat an annual powerhouse in convincing fashion.
They both, however, start with clean slates on Sunday night. The Niners will try and maintain their current place atop the NFL mountain. The Lions will look to play spoiler, exact revenge for last season's defeat and knock them off it.
* All stats provided by ESPN.com