Nothing happened except LSU posted it's best passing game of the season. Did you miss that? The OP is asking if that means LSU has improved and we can expect a better passing game. Most observers think that LSU has improved and the verdict is out on whether it can be sustained. You, on the other hand, think that LSU is horrible, the worst in the country, will never get better, and you secretly love Gary Crowton. We're shocked to hear that. Shocked, I tell you.
433 total yards vs the #5 defense in the country was not an ineffective offense. The passing game was average.