This is quite a nice episode in itself, although not one of the best of the season.
As with many episodes, it shows that Hank and his friends are essentially kind-hearted people who will go out of their way to help another; here not just because they don't want to see their side lose the football championship, but because they don't want to see elderly groundskeeper Smitty, who has kept the field for almost thirty years, lose his job and thus lose his pension.
The b-plot involves Luanne starting dating a red neck called Lucky, who has a big shiny truck. The way the rednecks are introduced to the plot, with them annoying Khan to come out and join them, is a reference back to the previous season's 'The Redneck On Rainy Street', a rare reference back to one of the show's "out of character" escapades.
I could see the resolution of the two plots long before they came up, but even so, it was a pleasing conclusion to a fair (if average) tale.