Once the noose was found, this is the best case scenario, right? Wallace didn't plant it or make it up, and wasn't the one to overreact to it; no one targeted Wallace's garage with a noose.
Maybe there is a scenario where some redneck thought it would be funny 7 months ago to tie the garage rope into a noose, and maybe that guy is a racist and did it with racist intent, but that seems pretty minor and like a pretty big leap.