I don't think Laviano is terrible, just not a QB who is going to lead a team to A.) A comeback win when we're down or B.) be able to pull off close wins like last night. He's a game manager through and through but even that comes into question when he can't remember what down it is.
That being said, nothing was more telling about what other team's defenses think of Laviano than that last drive. MSU safeties were what, maybe 15 yds off the line? I might have missed it, but they didn't play a prevent or deep coverage once that last drive that I saw. So they either trust their ability to close on any deep ball that was thrown knowing it wouldn't get their quick, or just realized he couldn't actually throw the ball that deep.